DMM Amprobe AM-510-EUR



This DMM has all the normal functions and a few extra.





It included the DMM, a pair of probes, a safety information sheet and a mini CD with the manual (It can also be downloaded).





Probes are branded with Amprobe and rated for 10A




The probes has removable tip covers with CAT ratings (The DMM do not have as high CAT rating as the probes).



The plug is fully shrouded.



The meter has a led at the front for flashlight usage, it is behind a plastic window.





The tilting bale works very well, it is easy to extended and the rubber secures the meter do not slide around when pushing buttons or turning the range switch.







Display



The above picture shows all the segments on the display.



Typical display during usage, it will show the number and what measurement is selected.



Functions



Buttons:

• Hold: Freezes the display, hold down for backlight.
  
• Rel: Shows values relative to current value, will also select manual range. Press again to disable.
  
• Range: Will disable auto range and change range, hold down to activate auto range.
  
• Hz % (red): Shows frequency and duty cycle in AC ranges.
  
• Select (Yellow): Select the ranges printed with yellow
  
• : Turn the flashlight on or off.
  

• Off: Meter is turned off
  
• VAC: Show AC voltage, using the red button frequency and duty cycle can be selected.
  
• VDC: Show DC voltage.
  
• ohm…: Resistance, continuity, diode and capacitance.
  
• Hz: Frequency and duty cycle.
  
• NCV: Non contact voltage, i.e. detect electric fields.
  
• 9V: Test 9V battery, note probe must be connected to mA input.
  
• 1.5V: Test 1.5V battery, note probe must be connected to mA input.
  
• uA: Current AC and DC. In AC the red button will show frequency and duty cycle.
  
• mA: Current AC and DC. In AC the red button will show frequency and duty cycle. Watch out for burden voltage.
  
• A: Current AC and DC. In AC the red button will show frequency and duty cycle.
  

• A: High current, maximum current is 10A
  
• mAuA: The lower current ranges, also used for testing batteries.
  
• CON: The common terminal for all ranges.
  
• xxx: All other ranges.
  

• Volt and frequency
  
  
  
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • Frequency input do not require a zero crossing.
    
  • Frequency input requires about 0.2V before it works.
    
  • At 1Vrms input frequency range is from 0.5Hz to 20MHz
    
  • AC volt can measure up to about 1kHz
    
  • If there is a large DC voltage on the AC, it will show 0 in AC
    
  • Input impedance is 10-11Mohm on DC and AC
    
  • There is only mV range in AC and it must be manually selected.
    
  • Rated overload protection is 600VDC on DC range and 600VAC on AC range
    
  
  
• Current
  
  
  
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • Rated overload protection is the fuses: 0.5A/660V and 10A/660V
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm is 0.42V open and 0.16mA shorted
    
  • Continuity is slow (About 70ms).
    
  • Continuity beeps when resistance is below 40ohm and is noisy up to about 90ohm.
    
  • Continuity is 0.44V open and 0.16mA shorted
    
  • Diode range uses 1.5V, max. display is 0.999V at 0.16mA, max. current is 0.51mA shorted
    
  • In the lower capacity ranges REL must be used (Offset is about 13nF on my meter)
    
  • 100uF takes about 16 seconds to measure.
    
  • Rated overload protection is 600VAC
    
  
  
• Miscellaneous
  
  
  
  • Battery test for 9V uses 1Kohm load resistor
    
  • Battery test for 1.5V uses 30ohm load resistor
    
  • Rated battery overload protection is the 0.5/600V fuse.
    
  • Current consumption of meter is 2.2mA to 3mA (9mA with backlight, 26mA with backlight and flashlight)
    
  • Meter works down to 5.4V where display starts to fade and will turn off at around 5V, battery symbol show at 6.4V.
    
  • Reading will change slightly with battery voltage: 3 count on a 10V reading from 9V to 6V.
    
  • Backlight varies with battery voltage and goes off at around 5.4V
    
  • Flashlight works down to about 2.7V on battery.
    
  • The meter usual need a couple of display update to reach the final value and may show a too high value for a moment.
    
  • Viewing angle is good
    
  • Display updates around 3 times/sec
    
  • Backlight will automatic turn off in about 15 seconds.
    
  • Will automatic turn power off in about 30 minutes.
    
  • Standard probes fits fine.
    
  • Generally the precision is not “spot on”, but within the specified tolerances.
    
  • Weight is 360g without accessories, but with batteries.
    
  • Size is 190 × 91 × 50mm.
    
  
  
• Probes
  
  
  
  • Probe resistance 24mOhm for one (Black probe had a loose connection).
    
  • Probe wire is soft and 87cm long.
    
  
  

DMM XL830L



This is a really cheap DMM with manual ranges and a minimum of functions.



There was no box included with the DMM.



It included the DMM, a pair of probes and a instruction sheet.
The instuction sheet includes specifications for AAC and capacity, two ranges the meter do not have.



The standard probes are rather tiny.



They use 4mm plugs, but they are not shrouded.



When using the tilting bale the DMM requires two hand to turn the range switch, when laying down it depends on the surface. The meter is very smooth on the back and will easily slide around.









Display




Typical display during usage, it will show the number and what range is selected (i.e. 2 in the picture above).
The lightning symnbol is only shown in the 600V ranges.



Functions



Buttons:

• Hold: Will freeze the display reading, until pressed again.
  
• Backlight (Round button): Turn backlight on.
  

• Off: Meter is turned off
  
• VAC: 600 & 200: AC voltage ranges.
  
• ADC: 200u, 2m, 20m, 200m, 10A: DC current range
  
• hfe: NPN & PNP: Transistor tester
  
• : Continuity and also announced as diode, but it is not.
  
• Ohm: 200, 2K, 20k, 200k, 2M
  
• VDC: 200m, 2, 20, 200, 600: DC voltage range.
  

• 10ADC: 10A unfused DC current input.
  
• CON: The common terminal for all ranges.
  
• xxx: All other ranges, including mA. It is always problematic when a current range shares connector with a voltage range, if the switch is in the wrong position the (hard to replace) fuse will blow (at least). This will only affect current, voltage will still work.
  
• ECBE: Transistor tester input.
  

• Volt and frequency
  
  
  
  • AC volt readings starts to drop at 5kHz
    
  • Input impedance is 1Mohm on DC
    
  • Input impedance is 0.5Mohm on AC
    
  • AC range uses a single diode, i.e. DC will show a (wrong) voltage if it has the correct polarity.
    
  
  
• Current
  
  
  
  • 10A range will change a few percent at 10A current due to heating.
    
  • 10A range is unfused
    
  • mA range is fused with a soldered fuse.
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm voltage is 0.3V open in 20k and above ranges and 25uA shorted in 20k range down to 0.3uA in 2M range
    
  • Ohm voltage is 2.9V open in 2k and 200ohm ranges and 3.3mA shorted in 200ohm range and 1.6mA in 2k range
    
  • Continuity is slow (About 400ms).
    
  • Continuity beeps when resistance is below 72ohm.
    
  • Continuity is 2.9V open and 1.6mA shorted
    
  • Diode rnage is same as continuity and it will show ohm
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 0.64mA except 2k, 200ohm and Continuity where it is 3.4mA (Backlight adds a short burst of up to 50mA)
    
  • Backlights fades from the moment the backlight button is released.
    
  • Meter displays values down to 2.7V where it turns off, battery symbol show at 6.8V.
    
  • Readings will increase significantly in value below 6.2V (Shows about double voltage at 2.8V).
    
  • Backlight works down to about 2.6V where it is fairly dim.
    
  • Viewing angle is good
    
  • Display updates around 3 times/sec
    
  • Backlight will fade to off in about 12 seconds.
    
  • Will not automatic turn power off
    
  • Standard probes cannot be fully pushed down, but they do make contact.
    
  • The meter usual need a couple of display update to reach the final value.
    
  • Weight is 135g without assories, but with batteries.
    
  • Size is 138 × 68 × 34mm
    
  
  
• Probes
  
  
  
  • Probe resistanse 93mOhm for one.
    
  • Probe wire is fairly soft and thin, the are 58cm long.
    
  
  

Hello to everyone, today I'll review the Ruike Jager F118 (Green) sent me by Ruike, whom I thank for the opportunity and trust given to me.



CLICK HERE to go to the official product page on the Ruike's website.


Official Features Taken from Ruike:

- Sandvik 14C28N (58 ~ 60 HRC) blade material
- G10 knife's handle
- finish: stonewashed


The Packaging and the Accessories

The Jager F118, like the other Ruike's products, comes in a sturdy cardboard box. On the front, in addition to the brand's name, there is also the motto of the company.



On the back there are more information about Ruike and, as can be seen from the first written, this mark is connected to the famous brand Fenix.



On one side is attached a sticker that shows the model name and the color of the handles.



Opened the box, we will find the knife hosted into a specially shaped compartment.



Once removed everything from the packaging, we will have:

- the Jager F118
- The scabbard made of black plastic (ABS)
- warranty's sheet
- the manual in English, Chinese and Spanish



Here, the pages of the manual that you can download or view on the Ruike's website.




The Knife

The Jager F118 is the top fixed blade and full tang knife of the Ruike (pronounced "Rake").
The steel used in the construction of this knife is the Sandvik 14C28N (58 ~ 60 HRC), much used in these areas due to its corrosion resistance, high general hardness and high qualities of thread trimming.
The material used for the handles is the G10, obtained by combining fiberglass and epoxy, which offers good grip in a variety of situations. In the model reviewed, the handle is green with black streaks. But are also available in all black (change the last letter of the name from G to B).

Here's the Jager, just took it out of the box, in all its glory.



The knife comes with a piece of hard plastic that protects the tip,



protection that comes off very easily.



The blade has a drop point profile and a stonewashed finish. On the left side stands out, in plain sight, the name of the brand.



On the opposite side you will find the model name



and, next to the grip, the name of the steel used and an identification code. To the right of the latter, there is a hole where you can put a dragona if you feel necessary.



On top of the knife there are grooves that increase the grip of the thumb when we will make some work.



Despite the thickness of 4.5 mm thickness (4.4 mm according to my digital gauge), the back has rounded corners and this makes it look thinner than knife actually is not. Obviously the shapes gradually thinning when approaching the tip and, in my opinion, the particular cut of the head makes the line of the knife very nice to look at.





And finally, to conclude this section, there's the handle.
As mentioned, are black and green and are held together by 4 torx screws (2 on each side) and make the handle very comfortable and grippy.
The overall shape of the tail of the knife does not make a very comfortable backward grip position to chopping. Batoning instead will be performed flawlessly.



There is another hole in the tail which is fine for a dragona and either for a simpler, but still valid, strap or lanyard.




The Scabbard

The scabbard supplied with this knife is not done in kydex but is built with the simplest ABS plastic. The knife will fit perfectly inside and will not come off without our intervention. Will not come out from there even if it is put upside down.



All around there are riveted holes (8 usable in total and 4 still free) which, besides ensuring the clip, allow the engagement of other knives with sheaths of the same system or adding paracord or other useful tools.



On the back, compared to the previous picture, there is a clip attached to the system that allows it to rotate 360° on preset positions, however, stopping suddenly.



Here's the clip viewed from the side. Both it and the locking and rotation system are completely made of plastic but nevertheless has a good stain on clothes.



The locking system is composed of 9 holes into which you insert a PIN that is operated by a lever (plastic).



To rotate the clip, and then change it position, simply depress the lever to separate pin and holes. The trigger will be released when we find the location you want.



Small digression: the locking system is anchored to the knife-scabbard using 4 torx screws which, with a special instrument, can be unscrewed and screwed on the opposite side to the scabbard. This enables both the left/right-handers to use this product.



The latches that will tighten the screws are not fully circular but will have a flat part



which will avoid the screw to turn into the hole that will be inserted which will have the same shape.



The side of the scabbard has horizontal grooves on which will be placed the thumb to get more grip when we leverage to pull out the knife.





How the knife looks like when carryed by your side





or carryed behind on your back.






The Tests Performed

The knife comes with a great factory sharpening and cutting of a sheet of paper or a cardboard without any problems.





Also the makingo of feather sticks is easy, given the comfortable grip that won't fatigue during this type of work.



Also running the batoning on a 7/8 cm diameter ankle turns out to be a not too difficult operation for this F118 Jager and, with about 10 shots in total, it will divide into two a 30 cm-long wooden ankle.







The only drawback encountered during the operation was a slight loosening of the rear screw due the impacts of another stub wood used during batoning. Probably had not been tightened and, when comed back to home, I made sure nothing is damaged and then tighten all well.
During the batonning, the loosening of the tail, made slightly unstable grip and slowed the work.



N.B.I want to clarify that the wood used in testing have been picked in the undergrowth by trees or fallen branches on the ground in a natural manner. The wood, after tests, remained available to people in the barbecue area present in the vicinity of where I was. No living tree has been mistreated during testing.


Dimensions and Weights

The F118 Jager weighs 195 gr while the only sheath weighs 95. The lenght of the knife is 22.3cm, the only cutting edge is 10.5 cm long, the thickness is 4.4 mm while the knife is high, from the wire to the back, 3.3 cm.

Dimensional comparison with a big BIC lighter,



with theRuike LD43,



with a Morakniv Companion Tactical



and with a KA-BAR BK7.



Comparison also of the thickness of the Companion, the Jager and BK7.




Personal considerations

This Jager F118 is a valid field knife, very practical because its dimensions that also allow you to perform works not overly burdensome as set up a fire to heat or cook and eat something hot.

The scabbard, though is maded of plastic, seems sturdy and his ingenious locking system allows us to wear it and have it available in the easiest way possible.

The generous blade thickness allows it to perform even the batoning, as long as the piece of wood hasn't a diameter too generous.
Its weight, its size and the comfort of the grips make this knife a good companion for any outdoor outlet. Also because that is its nature.

The only improvement that I also suggested to Ruike, is to control better the screws that keep togheter the handles and, if necessary, to take due care to improve and make more stable its clamping system.

What do you think about? You will buy it?

DMM Southwire 16040T



Southwire is an American wire and cable company and have a couple of DMM’s in their range. This is a fairly compact meter with most of the common DMM functions and a few extra.





The meter is sold in a clamshell box with comparison to other Southwire meters on the back.



The box contains the meter, probes and a manual, it is also possible to download a manual.




The probes are rated for 600V and 10A in CATIV environment, this is a very good rating.



The removable tip must be on for best safety



The standard size plug is fully shrouded.







The tilting bale locks in both position (in and out). It might be possible to switch range on a non-slip surface, but it is difficult on a normal table.



Both fuses and batteries can be replaces by removing a lid.



The flashlight.



The probes looks fairly large on this small meter.






Display



The above picture shows all the segments on the display, not all are used by the meter.



Typical display during usage, it will show the number and what measurement is selected.
The circle with arrow shows that auto power off is enabled, hold down MODE when turning on to disable this.



Functions



Buttons:

• Mode: Selects secondary ranges for each position on the range switch.
  
• Max/Min: Starts recording min/max. values, press the button to change between min/max, hold down to exit.
  
• : Turns on the flashlight, hold down to turn on Bluetooth.
  
• Hold: Will freeze the display, hold down to use turn on backlight.
  

• uA: Current DC and AC, use MODE for DC.
  
• mA: Current DC and AC, use MODE for DC.
  
• A: Current DC and AC, use MODE for DC.
  
• Off: Meter is turned off
  
• VAC: Volt AC, frequency and duty cycle.
  
• VDC: Volt DC
  
• : Resistance, continuity, diode and capacitance
  

• 10A: High current, it can only withstand 10+ ampere for 30 seconds time (Fuse is 10A).
  
• COM: The common terminal for all ranges.
  
• xxx: All other ranges, included mA and uA. Having current range on the same terminal as voltage will increase the risk for mistakes.
  

• Volt and frequency
  
  
  
  • Frequency input requires a zero crossing.
    
  • Max/min needs about 280ms to capture a voltage.
    
  • At 0.1Vrms input frequency range is from 1Hz to 3kHz
    
  • At 1Vrms input frequency range is from 1Hz to 43kHz
    
  • At 7Vrms input frequency range is from 1Hz to 540kHz
    
  • 1 VAC is 5% down at 2.1kHz, rms will not work at this frequency
    
  • Input impedance is 6Mohm on DC and 10-11Mohm on AC, also in mV range.
    
  • Ranges rated to 600V AC/DC
    
  
  
• Current
  
  
  
  • Ranges rated with 10A/600V and 0.5A/600V fuse
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm is 0.97V open and 0.49mA shorted
    
  • Continuity is very fast (About 10ms).
    
  • Continuity beeps when resistance is below 50ohm
    
  • Continuity is 1.0V open and 0.49mA shorted
    
  • Diode range uses 3.2V, max. display is 3.000V at 0.19mA, max. current is 2.4mA shorted
    
  • 3900uF takes about 7 seconds to measure.
    
  • Ranges rated to 250V AC/DC
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 11mA (18mA with backlight), Bluetooth adds 7mA.
    
  • Flashlight uses 120mA with fresh batteries, at 2.4V the current is 160mA
    
  • Meter works down to 1.8V where meter turns off, battery symbol show at 2.4V.
    
  • Display loses contrast and viewing angle when battery drops in voltage also before the battery low symbol is shown.
    
  • Backlight is independent of voltage.
    
  • Reading is stable when battery voltage changes.
    
  • The meter a few display update to reach the final value.
    
  • Viewing angle is good
    
  • Display updates around 2 times/sec
    
  • Backlight will automatic turn off in 30 seconds.
    
  • Flashlight do not have a timeout, but will turn off together with the meter (i.e. 15 minutes).
    
  • Will automatic turn power off in about 15 minutes.
    
  • Standard probes fits perfectly.
    
  • Weight is 206g without accessories, but with batteries.
    
  • Size is 121 × 66 × 47mm.
    
  
  
• Probes
  
  
  
  • Probe resistance 24mOhm for one
    
  • Probe wire is soft and 80cm long.
    
  
  

DMM Mastech MS8229



This is a fairly cheap DMM with all common function and some environment functions.



It arrived in a box with a picture of another meter, because the box is used for multiple models. Mastech has 3 models in the MS8229 series as can be seen on the back of the box and this is the “high end” model.



It included the DMM, a pair of probes, a thermocoupler and a manual.




The probes has removable tip covers. The CAT rating is marked on the tip and will change when the cover is removed.



The plug is fully shrouded. The pin inside is shorter than standard probes.




The meter includes a cheap thermocoupler.





The tilting bale is stable enough to use the switch and buttons, but the meter may slide around on a smooth surface.



The environment sensors.





Display



The above picture shows most of the segments on the display, not all environment segments are not included.



Typical display during usage, it will show the number and what measurement is selected.
The display will always show humidity and ambient temperature, but they need a few second to initialize when powering on.



Functions



Buttons:

• Rel: Shows values relative to current value, will also select manual range. Press again to disable.
  
• Range: Will disable auto range and change range, hold down to activate auto range again.
  
• Select: Select the secondary ranges (VAC, AAC, continuity, diode, capacitance).
  
• °C/°F: Select between Celcius and Farnheit
  
• Hold/B.L: Freezes the display, press again to release, hold down to activate backlight (This will also activate hold, press again to relase hold).
  
• Hz/Duty: Shows frequency and duty cycle in V and A ranges, changes to duty cycle in Hz range.
  

• A: Current AC and DC, use SELECT to select AC
  
• mA: Current AC and DC, use SELECT to select AC
  
• uA: Current AC and DC, use SELECT to select AC
  
• : Ohm, Diode, continuity and capacitance range, use SELECT to change between them.
  
• V: Voltage DC and AC, use SELECT to select AC and use manual range to select mVAC
  
• Off: Meter is turned off
  
• Hz Duty: Frequency and duty cycle, for high bandwidth this selection must be used, it is only for low voltage.
  
• TEMP: Temperature with thermocoupler.
  
• dB: Sound pressure.
  
• Lux: Brightness
  
• x10Lux: Brightness, higher range. The display has a small x10 indication to show this range is selected.
  

• 10A: High current, it can only withstand 10+ ampere for a short time (Fuse is 10A).
  
• mAuA: The lower current ranges and thermocoupler (temperature) input, the selector switch will change between two different shunts, it uses a PTC as fuse.
  
• COM: The common terminal for all ranges.
  
• xxx: All other ranges.
  

• Volt and frequency
  
  
  
  • Frequency counter and duty cycle requires a zero crossing on AC, DC and frequency ranges.
    
  • At 100mVrms input frequency range is from 0.6Hz to 280kHz
    
  • At 1Vrms input frequency range is from 0.6Hz to 40kHz
    
  • Input impedance is 10 to 11Mohm on DC and AC
    
  • mVDC range is high impedance
    
  • 1 VAC is 5% down at 2.5kHz
    
  • High DC voltage may block for AC readings.
    
  • Rated overload protection for frequency range is 250V AC/DC
    
  
  
• Current
  
  
  
  • mA & uA range uses a PTC as fuse, i.e. it will automatic recover when over current is removed.
    
  • Fuse is 500mA/250V (Automatic) and 10A/250V
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm needs about 3.4s to measure 100ohm
    
  • Ohm is 0.42V open and 0.19mA shorted
    
  • Continuity is slow in speed (About 130ms).
    
  • Continuity beeps when resistance is below 42ohm (There is some noise for a few ohms more).
    
  • Continuity is 0.44V open and 0.19mA shorted
    
  • Diode range uses 1.7V, max. display is 0.999V at 0.31mA, max. current is 0.72mA shorted
    
  • 100uF takes about 16 seconds to measure.
    
  • Rated overload protection is 250V AC/DC
    
  
  
• Miscellaneous
  
  
  
  • Sound meter shows 16dB at low levels (like 60dB), but will show too high at 100Hz
    
  • Light meter is fairly precise with incandescent, but is not filtered correctly.
    
  • It is possible to get out of sync on °C/°F between TEMP and environment temperature.
    
  • Current consumption of meter is 2.5mA (30mA with backlight and 5mA with two input terminals on)
    
  • Display show wrong value at 2.8V on battery, battery symbol show at 3.6V.
    
  • Reading will change slightly with battery voltage: 3 count on a 3.0V reading from 4.5V to 3.5V.
    
  • Backlight brightness will very with voltage, but is works down to the meter shows wrong values.
    
  • The meter usual need a couple of display update to reach the final value and may show a too high value during that time.
    
  • Viewing angle is fairly good, except from the top
    
  • Display updates around 2.5 times/sec
    
  • Backlight will not turn off, even when meter turns power off after 35 minutes.
    
  • Will automatic turn power off in about 35 minutes.
    
  • Sockets are not deep enough to cover standard banana plugs, but they will make contact.
    
  • Sockets will light red when a probe is supposed to be on it.
    
  • If a probe is plugged into the wrong socket the correct one will flash red and the buzzer will sound.
    
  • Weight is 422g without accessories, but with rubber sleeve and batteries.
    
  • Size is 192 × 93 × 55mm with rubber sleve.
    
  
  
• Probes
  
  
  
  • Probe resistanse 25mOhm for one.
    
  • Probe wire is soft and 100cm long.
    
  
  

DMM Zeast 282



This is a fairly cheap DMM with 20000 count display.



It arrived in a universal DMM cardboard box, the illustration do not match the meter.



It included the DMM, a pair of probes, a thermocoupler and a manual.
The manual is without branding, it only says 20000 count DMM



No tip covers on these probes that is rated for 1000V Cat III and 10A
This means the rating is wrong.



The plug is fully shrouded, but shorter than standard probes.




The thermocoupler is the typical cheap construction.












The polarity markings for the battery is not very easy to see, there is a small + and – symbol at the bottom of the battery box.



Display



The above picture shows all the segments on the display.
It has two readouts and a bargraph at the bottom.



During AC Voltage or current the secondary readout will show frequency.



Typical display on other ranges.



Voltage detector shows dashes depending on the stregnth of the electric field.



Functions



Buttons:

• Hold: Freezes the display, hold down for backlight.
  
• Range: Will disable auto range and change range, hold down to activate auto range.
  
• Rel: Shows values relative to current value, will also select manual range. Press again to disable.
  
• Hz %: Shows duty cycle in AC and frequency ranges (Frequency is already on the secondary display, but it will be turned off in duty cycle mode).
  
• Select (Yellow): Select the ranges printed with yellow and between C°/F° (The yellow % and Hz range is selected with Hz % key).
  
• Peak: Will show peak values in AC ranges, but it only works up to a few hundred Hz. The function will show correct for combines AC and DC.
  

• Off: Meter is turned off
  
• VAC: Show AC voltage, using the SELECT button frequency and duty cycle can be selected.
  
• VDC: Show DC voltage.
  
• mV: Show DC or AC mV. In AC the Hz % button will show duty cycle. This selection is also used for temperature.
  
• ohm: Resistance, continuity, diode and capacity.
  
• Hz %: Frequency
  
• A: Current AC and DC. In AC the HZ % button will show duty cycle.
  
• mA: Current AC and DC. In AC the HZ % button will show duty cycle.
  
• uA: Current AC and DC. In AC the HZ % button will show duty cycle.
  
• Volt Alert: Electric field detection.
  

• 10A: High current, it can only withstand 10+ ampere for a short time (Fuse is 10A).
  
• mAuA: The lower current ranges, the selector switch will change between two different shunts (Fuse is 200mA).
  
• COM: The common terminal for all ranges.
  
• xxx: All other ranges.
  

• Volt and frequency
  
  
  
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • At 100mVrms input frequency range is from 1Hz to 4MHz
    
  • At 1Vrms input frequency range can be stretched to 19.999MHz
    
  • Duty cycle works from 2% to above 99% at 100kHz with 1Vpp
    
  • Peak needs about 0.8ms to capture a voltage.
    
  • 1 VAC is 5% down at 2.2kHz (RMS will not work at the frequency).
    
  • Frequency counter requires a zero crossing
    
  • Input impedance is 10Mohm on DC and AC
    
  • mV range is high impedance for DC and 10Mohm for AC
    
  • Rated overload protection on mV is 550V DC/AC
    
  • Rated overload protection on V 1000V DC or 750VAC
    
  
  
• Current
  
  
  
  • On 10A range there is an audible alarm at 10A
    
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • Rated fuse is 200mA/250V glass and 10A/250V ceramic
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm needs about 2.8s to measure 100ohm
    
  • Ohm is 1V open and 0.39mA shorted
    
  • Continuity is fast (About 30ms).
    
  • Continuity beeps when resistance is below 50ohm.
    
  • Continuity is 1V open and 0.39mA shorted
    
  • Diode range uses 3.2V, max. display is 1.9999V at 0.7mA, max. current is 1.7mA shorted
    
  • 11000uF takes about 9 seconds to measure.
    
  • Rated overload protection on is 550V DC/AC
    
  
  
• Miscellaneous
  
  
  
  • There is no temperature compensation near the connector
    
  • Current consumption of meter is 2.5mA or 3mA in AC (31mA with backlight and AC)
    
  • Meter works down to 3.2V where it will show wrong values, battery symbol show at 5.7V.
    
  • Reading are stable down to 3.2 volt
    
  • Backlight works below 3.2V where it is a bit dim.
    
  • The meter usual need a couple or more display update to reach the final value.
    
  • Viewing angle is good, except from the top.
    
  • Display updates around 3 times/sec
    
  • Backlight will automatic turn off in about 13 seconds.
    
  • Will automatic turn power off in about 15 minutes (Holding HOLD down during power on to disable).
    
  • Standard probes cannot be fully inserted, but they will work. Banana plugs can be fully inserted.
    
  • Weight is 359g without accessories, but with rubber sleve and batteries.
    
  • Size is 183 × 90 × 46mm with rubber sleve.
    
  
  
• Probes
  
  
  
  • Probe resistanse 76mOhm for one.
    
  • Probe wire is soft and 93cm long.
    
  
  

Hello everyone, today I'll be reviewing the Nitecore NEB10 kindly sent me byNitecore, whom I thank for the confidence afforded to me.



CLICK HEREto go to the official page on the Nitecore website..


Official features taken from Nitecore:

- designed for outdoor excursions or day-long trips
- hard-use military-spec 1050D high strength abrasion resistant light-weight nylon fabric
- coated surface ensures excellent resistance to water and fouling
- frontal laser cutting Molle System made from durable Hypalon synthetic rubber for modular attachment
- partitioned main compartment with loop surface accommodates hook-and-loop organizers and allowing for complete customizability
- dual zippered compartments on the front
- rear mesh storage area
- side retention lanyards
- drainage grommets located on the bottom
- adjustable and removable padded shoulder strap 
- D ring allow for quick operation
- volume: 366 cu.in/6 liter
- main compartment: 40 (L) x 20 (H) x 7 (D) cm / 15.7" x 7.9" x 2.8"
- frontal compartment: 16 (L) x 16 (H) x 2 (D) cm/ 6.3" x 6.3" x 0.8"
- weights: 558g (19.7oz)


Where to buy

You can purchase the NEB10 from NITECORESTORE.


The packaging

The NEB10 comes within a simple plastic bag that protects it from dirt.



Extract all from the envelope, we have:

- the NEB10
-  the strap to wear the bag as a shoulder bag
- the belt to clenching the bag to the waist and doesn't allow her to move around more than they should



The bag

The NEB10 is a tactical bag of average spacious (6 litres) for daily cities trips or for small outdoor trips.
Is constructed with cordura 1050D that, besides having a water resistance, it also guarantees an excellent resistance to abrasion.

The bag, centrally, has a large main pocket, two smaller pockets on the front and, on the back, there is another pocket made from a stretch mesh.
At the front, on the two pockets, there are M.O.L.L.E. attacks, laser-cutted, in synthetic rubber.

The NEB10 is available in black (reviewed here) or gray.
There is also the NEB20, which differs from this template just because the front part is in velcro instead of being made of rubber. Colours available are the same as of the NEB10.

Here is the bag front. The advertising card informs us that this bag is dedicated to excursions. Stand out the M.O.L.L.E. attacks of two front pockets and Nitecore logo at the bottom right.



Small digression: the main pocket and two secondary have independent hinges and each one has a single cursor to which is attached a small string with a non-slip plastic semicircle that facilitates opening and closing.
The hinges move smoothly and doesn't budge. The main pocket is equipped with two hinges whereas the secondary pockets add a internal flap that protects from water. The seams are all made good and I have not found errors.



By opening the large main pocket, we will have an entire piece covered with velcro



and the other six elasticized compartments where we could put anything.
On the bottom there are two drain eyelets.

Opened the two minor pockets we find, on both sides, a stretch mesh.



I want to clarify that both pockets are not linked together.



On both sides of the NEB10 there are three rows of M.O.L.L.E. attacks (two per row) but in not stretchable cordura.



On the back, that's the whole rear mesh pocket. It not stretchable and covers the entire length of the bag.



A small strip of Velcro is enough to keep the pocket closed.



Here are two drainage bottom eyelets.




The capacity of internal compartments

During my exit, I Overfilled the NEB10 and advanced space for other items.

Main compartment I inserted, attached with the NHL02S to Concept1, the Victorinox Huntsman, a bottle of water



and the solar panel BW-L1.



In the secondary pockets I put the new Nitecore LR10



and a small flat cell Xiaomi powerbank (there is my referral).




The shoulder strap and the belt

As mentioned earlier, the NEB10 has both the waist band and the shoulder strap.

Here's the waist band, attaches to the plastic supports, that has a plastic clip to open and close it easly.



Regard the shoulder strap, however, the speech is quite different. The closing is handled by this hard plastic clip that, thanks to the small metal hook, keep everything tightened properly.



Crushing the two longer sides of the plastic clip, we can release the metal hook that, like a spring, takes away from its seat.



On the back of the NEB10 are present, on each side, these two slots (four in total) that will be populated with the shoulder strap hooks. We can choose the position that is most comfortable for us.



Here's the bag with shoulder strap included. The strap is generously proportioned and has others M.O.L.L.E. attacks maded with velcro.



And here is how the NEB10 fits.



The attacks fit perfectly the NU05.










Dimensions and weight

According to official data, the main pocket of NEB10 measuring 40 x 20 x 7 cm while the secondary measuring 16 x 16 x 2 cm.
Its weight is 558 gr.

Afterwards, the photos for a dimensional comparison with a Nitecore NDP20 and a big BIC lighter.




Personal considerations

This NEB10 is a very very comfortable and capacious product that is suitable for both outdoor use and those tactical since, thanks to the countless attacks M.O.L.L.E., you can hook a lot of tools and objects or other pouch.

I like the look of this bag very much. The only problem is that it seems to attract dirt very easily, but nothing that a good wet cloth can't eliminate.

I didn't find any flaws in this model. As I have already written, every seam is perfect and the sliders flow well.
The shoulder strap of the shoulder belt is wide (and not "saw" the skin), comfortable and easily adjustable. The waist belt, if compared to the shoulder strap, is thinner and, with the heavy clothes of this period, does not create particular problems.

What do you think about it? Would you buy it?

DMM Aneng AN8009



This is the latest incarnation (Late 2017) of the this small fairly cheap meter.



It did not include a box, but was delivered in an envelope that contained the holster.



Everything was inside the holster.



It included the DMM, two pair of probes, a thermosensor and a manual.




The standard probes has removable tip covers.



The other set of probes fells rather low quality, but has some nice functions. They consist of two wires with threads at both ends and a couple of different tips that can be mounted in each end. It is slow to use, but very flexible.








Here are all the different tips.




The thermosensor is a real probe, not just the small bead at the end of wires. The plastic has a crack.
I am not convinced that this is better than the bead, that is smaller and easy to stick on just about to any surface with some sticky tape (Buying one as supplement is cheap).



The body of the DMM feels solid, the plastic is rather smooth, i.e. the DMM can easily slide on a surface. The tilting bale is rather flimsy and do not give enough support for pressing buttons and turning the range switch.














Display



The above picture shows all the segments on the display.
Not all the segments are used on this meter.



Typical display during usage, it will show the number and what measurement is selected.



Non contact voltage will show from one to four bars depending on the electric field strength.


Functions



Buttons:

• Range (Blue): Will disable auto range and change range, hold down to activate background light.
  
• Sel/Hold (Yellow): Select the ranges printed with yellow, hold down to freeze the display reading.
  

• Off: Meter is turned off
  
• V % Hz: Show voltage, using the yellow button will cycle between VDC, VAC, freq. and duty cycle.
  
• mV: Show millivolt, using the yellow button will cycle between VDC, VAC, Celsius and Fahrenheit
  
• 100Mohm: Resistance, continuity, diode and capacitance, work up to 99.99Mohm
  
• Hz: Frequency and duty cycle, this is used for lower voltages and works at fairly high frequencies.
  
• A mA: Current AC and DC (The meter is missing some mA ranges).
  
• uA: Low current AC and DC.
  
• NCV: Non contact voltage.
  

• A mA: A very low burden voltage mA range and a 10A that cannot really handle 10A.
  
• CON: The common terminal for all ranges.
  
• xxx: All other ranges, including uA. It is always problematic when a current range shares connector with a voltage range, if the switch is in the wrong position the (hard to replace) fuse will blow (at least). This will only affect current, voltage will still work.
  

• Volt and frequency
  
  
  
  • 1 VAC is 5% down at 2.1kHz (RMS will not work at the frequency).
    
  • At 1Vrms input frequency range is from 1Hz to 6.6MHz
    
  • Input impedance is 10Mohm to 11Mohm on DC and AC
    
  • mV range is high input impedance for DC
    
  • Frequency input needs about 250mV to work at 1kHz.
    
  • Frequency counter and duty cycle works without zero crossing in Hz range.
    
  • Duty cycle works from 2% to above 99% at 100kHz with 2Vpp (1Vpp do not work), precision is within 0.8 (About 0.8 too low).
    
  
  
• Current
  
  
  
  • 9.9A range is badly calibrated at high current.
    
  • 9.9A range will change some percent at 5-10A current due to heating.
    
  • 9.9A range will give an audible alarm when current is above 9.9A (uA will not).
    
  • Current ranges are limited to 36VDC and 25VAC.
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm needs about 2.6s to measure 100ohm
    
  • Ohm voltage is 1V open and 0.38mA shorted
    
  • Continuity is very fast (About 4ms).
    
  • Continuity beeps when resistance is below 50ohm.
    
  • Continuity is 1V open and 0.38mA shorted
    
  • Diode voltage is 3.2V with display of up to 3.000V with 0.14mA, maximum current is 1.6mA shorted
    
  • 70000uF takes about 9 seconds to measure.
    
  
  
• Miscellaneous
  
  
  
  • A beeper will sound shortly before the meter turns itself off
    
  • Current consumption of meter is 1.6mA to 2mA (8.7mA with backlight)
    
  • Meter works down to 2.2V where it turns off, battery symbol show at 2.4V.
    
  • Readings are stable with changing battery voltage.
    
  • Backlight only works down to about 2.6V where it is fairly dim.
    
  • Viewing angle is good.
    
  • Display updates around 3 times/sec
    
  • Backlight will automatic turn off in about 120 seconds.
    
  • Will automatic turn power off in about 15 minutes.
    
  • The meter usual need a couple of display update to reach the final value.
    
  • Weight is 136g without accessories, but with batteries.
    
  • Size is 130.4 × 65 × 32.3mm
    
  
  
• Probes
  
  
  
  • Probe resistance 55mOhm for one.
    
  • Probe wire is fairly soft and 65cm long.
    
  • The probes with replaceable tips has 55mOhm with 4mm plug.
    
  • The probes with replaceable tips has 87cm long fairly soft wires.
    
  
  

Hello everyone, today I'll be reviewing the Ruike M61 sent me for the occasion by Ruike, whom I thank for the confidence afforded me.



CLICK HERE to go to the official product page on the Ruike website.


Official features taken from RUIKE:

- Blade material: 12C27, cryogenic treatment, 58~59HRC
- Handle material: G10
- Functions: 21

Where to buy

You can purchase the M61 from FENIX OUTFITTERS

The packaging and accessories

The Ruike M61 comes, like the other Ruike's products, in a very sturdy cardboard box.
In the front you will find the company logo and motto.



On the back there are more information about Ruike and, as can be seen from the first written, this brand is connected to the famous brand Fenix.



On one side is attached a sticker that shows the model name and the color of the handles.



Once removed everything from the packaging, we would have:
- the M61
- warranty
- the manual in English, Chinese and Spanish



Here, the pages of the manual that you can download or view on the Ruike website.




The Multi-Functional Knife

The M61 is the multi-functional knife with more accessories from Ruike M series. Aesthetically stay faithful to the brand's other multi-functional lines. The handle is always in G10 and, in this model, are available in black, brown and green (as in the sample reviewed).

Here's the M61 in all of its glory. As soon as you take it out of its package, there is attached a small rectangular paper with the logo of Ruike to it.

In this side of the multi-functional there are only the hadle and the torx screws that secure the tools.



On the opposite side, in addition, there is a removable pocket clip, the tweezers inserted into the handle and the corkscrew.



Observing the M61 from the side, you can see almost all of the tools that form it. They are sufficiently spaced and you can be extracted without a hitch.



On the opposite side, as with the other models, there are only a few tools.



Glass-breaker tip in tungsten protrudes from the tail. Even if you can just see it, there is also the flap that facilitates the extraction of tweezer hidden inside the handles.



Among all the tools that make up this multi-functional knife, certainly we can't miss the main blade. It has a drop point tip profile and, like for the little Victorinox, it can be opened with the groove on the blade itself.
Even if there is no real knife block, there is however the joint slip block which, like on the small Vic, oblige to accompany the blade closure due the (small) resistance that is felt and that avoids being injured through fault of an accidental closure due an unwanted release.
The blade extraction is fluid and takes place without problems and people with short nails will not have difficulty in extracting it.
To the right of the nail groove there is the name Ruike.



On the other side, always on the blade, there is the name of the model with the final letter that identifies the color of the handles. Letter which will change depending on the color of your choice when purchasing.



The blade, as it is also reported on its base, is made with the famous stainless steel Sandvik 12C27 (58 ~ 59 HRC), which is also used on the equally famous Morakniv knives.



Among the other instruments is the small pliers (complete with retension level that, acting as a spring, allows the automatic opening) with a wire cutter (electrical or for fishing hooks),



the saw for wood



the metal file in two different grits (one per side) with a nail cleaner,





scissors with another retension level,



the bottle opener with the 6.5 mm flat screwdriver and wire strippers and, on the other side, a rope cutter slightly curved blade with a screwdriver 3 mm always flat.



To conclude this side, there is also the eyelet, concealed for a wrist strap or a keyring.



On the opposite side, we can't miss the corkscrew



and the drill to pierce the wood which, in case of need and thanks to this forum, can act as a leathers needle.



To conclude with the tools, here's the tweezer extracted from the handle. As you can see, the tweezers is generously proportioned and is almost as long as all the M61.




How works the various tools

The M61 comes with an excellent factory sharpening and cutting a sheet of paper or cardboard without any problem.





Do the pegs is quick and easy to do,



The saw bites good pieces of wood of average or small diameter,



scissors perform their task very well,



strips the wires does not present difficulties,



the ropes (nylon) large (about 1 cm) is cutted without great difficulty,



the file and the nail cleaner,





the two screwdrivers,





pliers and tweezers,





The drill,



and the bottle opener.




Dimensions and weight

The M61 weighs 198 grams in total. The blade is 6.8 cm long and its thickness is 2.3 mm in the thickest part. The teethed part of the saw is 7 cm and the useful part of the file is about 6.5 cm.

Dimensional comparison with the Victorinox Huntsman and LD43 Ruike.





Obviously we couldn't miss to do a comparison with the two most useful tools, in my opinion, that the three knive have in common: the main blade



and the saw.



Even the tweezers provided are of different size.




Personal considerations

The M61, as previously mentioned, is the most complete multi-functional knife of the Ruike M series. This makes of it a great factotum because, thanks to the large number of tools, it is useful to perform different tasks in different fields.

Despite the important general thickness, I didn't find it uncomfortable to grip and, in the long run, it didn't tire my hand very much. I liked the color of the G10 handles right from the start and, although I have not seen the others live, I venture to say that it is probably the most beautiful.

The blade has an excellent factory sharpening and cuts well right from the start.The saw instead needed, also due to the wet wood found for my tests, a little intervention to remove excess material left between the teeth and that slowed the cut.

Overall it's a great multi-functional knife.Obviously it isn't recommended for all those users who are looking for something specific, perhaps suitable mainly for outdoor use, and which necessarily require less general weight and fewer accessories.

DMM Keysight U1233A



Keysight is on of the very large test and measure manufacturers, with anything from simple DMM to highly advanced and expensive measure equipment. This meter is one of the simple DMM’s, I have taken the most advanced meter in this product series (U1230 series).



The meter arrived in a box that is used for all DMM’s in this series.



The box included the meter, batteries, probes, a calibration certificate, safety instructions and quick start guide. A full manual can be downloaded from Keysight.
A thermocoupler is not included, but it can use any K-type with banana plugs.




The probes are branded Keysight and rated for 10A and 1000V



A protection for the tip is included.



The plug is fully shrouded and standard size.



The meter can be held in a hand and range changed with the same hand, because the range switch is accessible from the side.






The tilting bale has multiple positions.



In the top position the meter can be hanged on something.



There is a flashlight on the back of the DMM and a port for a IR/usb communication cable or a bluetooth transmitter (Keysight sells both).





Both batteries and fuse can be easily replace. uA do not need a fuse, but uses the general input protection on that terminal.







Display



The above picture shows all the segments on the display. To activate this hold down the “Trig Auto” button during power on.



During turn on the meter will usual show the model number.



Typical display during usage, it will show the number and what measurement is selected.
The bargraph will reflect the measured value, but updates much faster than the numbers.
The APO sign shows that auto power off is enabled, time and enable/disable can be changed in the configuration menu.



The electric field detection (NCV) has two ranges Hi and Lo, the bargraph indicates strength and the buzzer and a red led will signal if any field is detected.



Functions



Buttons:

• Null/Recall: Uses the current value as reference and will show all further readings relative to this, will change to manual range, can also be used to recall saved values.
  
• Max/min: Starts recording maximum, minimum and average value. Pressing again will change display between actual/min/max/avg, holding button down will disable the function.
  
• Range/auto: Switch to manual ranging and will also change range, hold down to get back to automatic
  
• Trig/Auto/hold log: A short press will freeze the display and store the value, a long press will enable auto hold, that will freeze and save any stable value (This is very useful)
  
• : A short press will turn on backlight, a long press will turn on flashlight, do it again to turn off.
  
• Esc/Shift/Vsense: Select orange marked functions, hold down for NCV (Vsense) function.
  

• V Zlow: Low-Z mode, meter is locked in 600V range and will not detect ghost voltages.
  
• Off: Meter is turned off
  
• VAC: AC voltage and frequency
  
• VDC: DC voltage.
  
• : Resistance, continuity
  
• : Diode
  
• : Capacitance and temperature.
  
• A: Current DC and AC, use “Esc/Shift” for AC and frequency
  
• uA: Low current DC and AC, use “Esc/Shift” for AC and frequency
  

• A: High current, it can only withstand 10+ ampere for a short time (Fuse is 11A).
  
• COM: The common terminal for all ranges.
  
• xxx: All other ranges, including uA.
  

• Volt and frequency
  
  
  
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • Frequency input do not requires a zero crossing.
    
  • Frequency input requires about 0.03Vrms before it works at 1kHz.
    
  • Max/min needs about 150ms to capture a voltage.
    
  • At 0.1Vrms input frequency range is from 0.5Hz to 100kHz
    
  • At 1Vrms input frequency range is from 0.5Hz to 170kHz
    
  • AC volt can measure up to about 430kHz, true RMS will not work at this frequency
    
  • AC volt can measure up to about 2kHz on Low-Z range.
    
  • Cannot measure a DC voltage correctly when there is a large AC voltage present.
    
  • Input impedance is 10-11Mohm on DC
    
  • AC must have a capacitor on input.
    
  • AC Low-Z the input impedance is 2.4kOhm at low voltage and will increase to above 70kOhm after a couple of seconds when applying 230VAC
    
  
  
• Current
  
  
  
  • Frequency counter and duty cycle can only be selected in AC ranges.
    
  • uA range is overload protected for current/voltage up to 0.3A and 600VAC/DC
    
  • A range is overload protected with a 11A 1000V fuse.
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm needs about 1.5s to measure 100ohm
    
  • Ohm is 0.95V open and 0.56mA shorted
    
  • Continuity is very fast (Better than 4ms), the limit is the non latched buzzer.
    
  • Continuity will turn on background light together with the beeper, but it is much slower.
    
  • Continuity beeps when resistance is below 23ohm
    
  • Continuity is 2.7V open and 0.56mA shorted
    
  • Diode range uses 2.7V, max. display is 2.099V at 0.24mA, max. current is 0.56mA shorted
    
  • 9000uF takes about 12 seconds to measure.
    
  • Ranges are overload protected for current/voltage up to 0.3A and 600VAC/DC
    
  
  
• Miscellaneous
  
  
  
  • Meter can save 10 values.
    
  • Current consumption of meter is around 3mA (28mA with backlight, 68mA with backlight+flashlight)
    
  • Display is about faded out at 3.0V, battery symbol starts flashing at 4.2V.
    
  • Reading is stable with varying battery voltage.
    
  • Backlight and flashlight works down to display is faded
    
  • The meter will often first update display when it has the correct value.
    
  • Viewing angle is good
    
  • Display updates around 5 times/sec
    
  • Depending on configuration it will automatic turn backlight off after some time.
    
  • Depending on configuration it will automatic turn power off after some time.
    
  • Standard probes fits perfectly.
    
  • Generally precision is within a few counts.
    
  • Weight is 372g without accessories, but with batteries and sleeve.
    
  • Size is 168 × 87 × 51mm with sleeve.
    
  
  
• Probes
  
  
  
  • Probe resistance 32mOhm for one
    
  • Probe wire is soft and 122cm long.
    
  
  

• Auto hold tolerance, i.e. how stable a value must be before auto hold updates the display.
  
• Smoothing, how many values must be averaged before displaying. This function is off by default.
  
• Voltage level to alert at with beeps. This function is off by default.
  
• Buzzer frequency, it is possible to select between a few frequencies.
  
• Auto power off timeout, from 1 to 99 minutes and disabled.
  
• Background light timeout, from 1 to 99 seconds or disabled.
  
• Background light brightness, default is maximum.
  
• Flashlight timeout, from 1 to 99 seconds or disabled.
  
• Flashlight brightness, default is maximum.
  
• Minimum frequency to measure, either 0.5Hz or 5Hz.
  
• Continuity alert, select between background light and buzzer or both.
  
• Power on greeting, select between beep, melody or none.
  
• Scale conversion, see below
  
• Override the capacitor selector switch position with a mV range.
  
• Continuity beeps on open, instead of shorted.
  
• Temperature is °C or F°
  

DMM DT-830B



This is a really cheap DMM with manual ranges and a minimum of functions.



There was no box included with the DMM.



It included the DMM, a pair of probes and a instruction sheet.
The instruction sheet includes specifications for temperature measurement, battery test and also has text about fuse replacement, i.e. it do not match the meter, even though it has a fairly correct drawing of the meter..



The standard probes are rather tiny, but marked that they can handle 1000V.



They use 4mm plugs, but they are not shrouded and very short.







On the back it says to use a 0.5A fuse, but there is no fuse inside.



To replace the battery the meter must be opened



Display



Typical display during usage, it will show the number.



The HV letters is only shown in the 750/1000V ranges.



Functions



The range switch is not very precise and do not always connect correctly.
Rotary switch:

• Off: Meter is turned off
  
• VAC: 750 & 200: AC voltage ranges.
  
• ADC: 200u, 2000u, 20m, 200m, 10A: DC current range
  
• hFE: NPN & PNP: Transistor tester
  
• : Diode test, but it do not show correct voltage.
  
• Ohm: 200, 2K, 20k, 200k, 2M: Resistance range.
  
• VDC: 200m, 2, 20, 200, 1000: DC voltage range.
  

• 10ADC: 10A unfused DC current input.
  
• CON: The common terminal for all ranges.
  
• xxx: All other ranges, including mA. It is always problematic when a current range shares connector with a voltage range, if the switch is in the wrong position the meter will be damaged (at least).
  
• NPN/PNP: Transistor tester input.
  

• Volt and frequency
  
  
  
  • 7V AC readings is 5% down at 8kHz (Rectification error is not included).
    
  • Input impedance is 1Mohm on DC
    
  • Input impedance is 0.5Mohm on AC half the time.
    
  • AC range uses a single diode, i.e. DC will show a (wrong) voltage if it has the correct polarity.
    
  • The specifications says the input is protected to 1000VDC/750VAC, except mV that is protection to 250VAC
    
  
  
• Current
  
  
  
  • 10A range will change significantly at 10A current due to heating.
    
  • 10A range is unfused
    
  • mA range is unfused (Manual says 0.5A fuse).
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm needs about 1.5s to measure 100ohm in 200ohm range.
    
  • Ohm voltage is 0.29V open in 2k and above ranges. Shorted is 80uA in 2k range down to 0.3uA in 2M range
    
  • Ohm voltage is 3V open in 200ohm ranges and 1.8mA shorted
    
  • Diode range uses 3V, max. display is 1.999V (Actual voltage is 1.3V) at 0.67mA, max. current is 1.2mA shorted
    
  • Diode voltage reading mostly useless, but range can be used to test a diode.
    
  • The specifications says the input is protected 250VAC for 15 seconds, I doubt it.
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 0.28mA except ohm with 0.5m and 200ohm/diode is 3.2mA
    
  • Meter displays values down to 2.7V where it turns off, battery symbol shows at 6.2V.
    
  • Readings will increase significantly in value below 4.2V (Shows about double voltage at 3.8V).
    
  • Viewing angle is good
    
  • Display updates around 2 times/sec
    
  • Will not automatic turn power off
    
  • Standard shrouded probes do not make contact, but banana plugs can be used.
    
  • The meter need some display update to reach the final value.
    
  • Weight is 106g without accessories, but with batteries.
    
  • Size is 123 × 68 × 25mm
    
  
  
• Probes
  
  
  
  • Probe resistance 98mOhm for one.
    
  • Probe wire is fairly soft and thin, they are 57cm long.
    
  
  

I received the Nitecore NEB10 for the review from Nitecore.

I use several EDC pouch/bags, both in my work and in my free time.
The NEB10 is a 6 liters EDC bag, that can be carried over the shoulder and secured to the body with a second belt. It is available in black and grey, I got the grey version.
The NEB10 is made of 1050D Nylon, with the front part with the MOLLE system in rubber.

Here is the front part with MOLLE system.

The MOLLE attachment points are also on the sides.
The zippers run fine and are equipped with practical D-rings.

The NEB10 has 4 compartments.
The main (40×20×7 cm)runs along the whole length of the bag, and has 2 drain holes (a Nitecore Thumb is the light in the pic)

On one side there’s hook and loop system (Velcro for attaching other bags and accessories) and on the other there are some elastic loops.

The 2 front pockets (16×16×2 cm) are symmetric and have a mesh divider

On the back there’s a big mesh, with a piece of Velcro for “closing” with the main body of the bag.

Beside the main strap, which runs over your shoulder, there is a smaller secondary one, that prevents the bag from bouncing around when you are moving. You have several attachment points for that belt.

Here’s strapped on my back

On the main strap there is a not removable MOLLE Pad

When I turn it around making it end up on my torso, accessing the pockets is easy.

.
.
.
My thoughts
The materials used for this bag are fine. The zippers run fine and the bag has some waterproof capability.
Compared to other bags, the tissue is a lighter and it makes the whole bag lighter without making it weaker.
While using the bag as it is, I found the lack of zip pouches and other (smaller) elastic bands for retaining smaller items. For my uses, a bag needs to have more dividers, more elastic bands and zip meshes (you can do that by adding your desired pouches, using the hook and loop pouches and organizers); and a handle.
I would have liked to be able to use the MOLLE system on the bag to attach flashlight and other pouches, however the cut on the rubber are too tight for most of my pouches. You need to use pouches or accessories with tight straps, or use classic MOLLE clips.

DMM SNDWAY SW-890C



If you insist on manual range, this meter has a fairly complete set of ranges with a manual range switch. They have cheated a bit capacity and frequency is auto range.



The box is in Chinese and covers both the C and D model of this meter (C includes temperature, D do not). The supplied instruction sheet was in English.



In the box was the meter, probe leads, thermocoupler and an instruction sheet. The instruction sheet is for both C and D models.




The standard probes are normal sizes and rated for CAT III 1000V and CAT IV 600V, but this cannot be a correct rating, because they are missing tip covers.



The plugs are fully shrouded and standard probe size.



The range switch is easy to turn, this means it can be turned single handed both when meter is lying on the table or standing on the tilting bale.












Display



All the segments are shown during power on.



Typical display during usage, it will show the number and selected measurement



Functions



Buttons:

• Hold/Select: Will freeze the display reading, until pressed again. Except in diode/continuity it will select between diode and continuity and in temperature mode it will select between Celsius and Fahrenheit.
  
• Max/min: Selects max/min/max-min in most modes, in capacity it will zero the reading.
  

• Off: Meter is turned off
  
• hFE: Transistor gain
  
• VDC: 600mV, 6V, 60V, 600V, 1000V: DC voltage ranges.
  
• VAC: 750V, 600V, 60V, 6V: AC voltage ranges.
  
• DCA: 60u, 6m, 60m, 600m, 20A: DC current ranges.
  
• ACA: 20A, 600m, 60m, 6m: AC current ranges.
  
• Hz 10M: Frequency ranges (Meter will auto range).
  
• °C °F: Temperature range
  
• : Diode and Continuity.
  
• Ohm: 600, 6K, 60K, 600K, 6M, 60M: Resistance ranges
  
• F: Capacitance range (Meter will auto range and max/min blue button can be used to zero range).
  

• 20ADC: 20A current input.
  
• mA uA: Lower current input.
  
• xxx: All other ranges
  
• COM: The common terminal for all ranges
  
• NPN/PNP: Transistor tester input.
  

• Volt and frequency
  
  
  
  • 5V AC readings is 5% down at 2kHz (RMS will not work at this frequency).
    
  • Input impedance is 10-11Mohm
    
  • Input impedance is high in 600mV range
    
  • At 100mVrms input frequency range is from 1Hz to 3.6MHz
    
  • At 1Vrms input frequency range is from 1Hz to 47MHz
    
  • Frequency counter requires a zero crossing.
    
  • Input protection is 750V AC or 1000Vpp
    
  
  
• Current
  
  
  
  • 20A range is fused with a 20A/250V fuse
    
  • mA range is fused with a glass 0.63A/250V fuse
    
  • 20A range has an audible alarm at 10A or above.
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm needs about 1s to measure 100ohm (Manual ranging has a speed advantage)
    
  • Ohm voltage is 1V open.
    
  • Ohm current is 275uA in 600ohm, 79uA in 6k, 9.6uA in 60k, 0.9uA in 600k, 0.1uA in 6M and 60M
    
  • Continuity is very fast (About 3ms).
    
  • Continuity beeps when resistance is below 50ohm.
    
  • Continuity is 1V open and 0.27mA shorted
    
  • Diode range uses 3.2V, max. display is 3.000V at 0.1mA, max. current is 1.1mA shorted
    
  • Overload protection is 600V AC
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 3.5mA, but selecting frequency will switch to 1.3mA in all ranges.
    
  • Meter turns off at 2.2V, battery symbol show at 7.5V.
    
  • Backlight fades with dropping voltage and is nearly out at 3V.
    
  • Readings are correct until the meter turns off.
    
  • Viewing angle is good
    
  • Display updates around 3 times/sec
    
  • Backlight will automatic turn off in about 15 seconds.
    
  • Will automatic turn power off in about 15 minutes.
    
  • Standard probes fits in the meter.
    
  • The meter usual need a couple of display update to reach the final value.
    
  • Weight is 322g without accessories, but with sleeve and batteries.
    
  • Size is 185 × 89 × 40mm
    
  
  
• Probes
  
  
  
  • Probe resistance 43mOhm for one.
    
  • Probe wire is 93cm long.
    
  
  

DMM Peakmeter MS8248S



This is a DMM with most common function and fully automatic, i.e. it has no range and function switch.
How well do it work and are there limitations?




It arrived in a DMM box with a image of the meter without brand.



It included the DMM, a pair of probes, a thermocoupler, spare fuses, a bag and a manual.




Everything fits in the bag.




The probes has removable tip covers. The CAT rating is marked on the tip and will change when the cover is removed.



With tip cover: CAT III-1000V, CAT IV-600V, without tip cover: CAT II-1000V (This is the usual marking on probes).



The plug is fully shrouded and a bit shorter than standard probes.




The meter includes a cheap thermocoupler.



The tilting bale is stable enough to use the buttons.










Display


The meter shows all segments during power on.



Meter is waiting for something to measure.



Typical display during usage, it will show the number and what measurement is selected.




When using the NCV detector the display will show NCV and the green leds on top will show the strength (There are only 3 steps, see tear-down), there are also sound effect from the buzzer when a electric field is detected.



Functions



Buttons:

• SEL/NCV: Holding the button down will engage the NCV mode, but only as long as the button is pressed. The SEL function is used when measuring AC to select frequency display and when measuring temperature to select between Celsius and Fahrenheit.
  
• : Turn the meter on or off.
  
• : Freezes the display, press again to release. Hold down to turn backlight and flashlight on.
  

• K-Type: Thermocoupler input with a real thermocoupler connector (nice).
  
• NPN/PNP: Transistor tester, not a very useful function.
  
• mA: Current input and capacitor tester input.
  
• CON: The common terminal for all ranges.
  
• xxx: Voltage and ohm range.
  

• Volt and frequency
  
  
  
  • Frequency counter only works when in AC, i.e. zero crossing is required.
    
  • At 1Vrms input frequency range is from 31Hz to 900Hz
    
  • At 5Vrms input frequency range is from 31Hz to 1kHz
    
  • Meter switches to AC at 31Hz, below DC is assumed.
    
  • Input impedance is 10-11Mohm on DC and AC
    
  • Bargraph is same speed as numeric display.
    
  • 5 VAC is 5% down at 240Hz
    
  • Combined AC+DC will be shown as a combined value, but precision is not that good.
    
  • Rated input protection is 600V DC/AC
    
  
  
• Current
  
  
  
  • A hand near the V input socket may change from current to voltage temporary.
    
  • Minimum current is 5mA
    
  • Rated input protection is 600mA/600V fuse
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm is -1.4V open and 0.28mA shorted, it uses negative voltage!
    
  • Continuity is slow in speed (About 600ms), auto ranging slows it down.
    
  • Continuity beeps continues when resistance is below 20ohm, and beeps intermittently when resistance is below 42ohm.
    
  • Continuity is -1.4V open and 0.28mA shorted, it uses negative voltage!
    
  • 4000uF takes about 14 seconds to measure.
    
  • Rated input protection is 600V DC/AC
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 4.5mA (56mA with backlight and flashlight)
    
  • Meter turns off at 1.8V on battery, battery symbol show at 3.6V.
    
  • Reading will change dramatically when battery voltage is low. From 3.2 to 2.2 it will change from 5.004 to 10.40V
    
  • Backlight brightness will vary with voltage, but is works below 2.7V
    
  • The meter usual need one or two display updates to reach the final value.
    
  • Viewing angle is fairly good, except from the top
    
  • Display updates around 2 times/sec
    
  • Bargraph follows display updates in speed.
    
  • Backlight and flashlight turns on together.
    
  • Backlight and flashlight will automatic turn off in about 10 seconds.
    
  • Will automatic turn power off in about 10 minutes.
    
  • Standard probes fits in sockets.
    
  • Weight is 287g without accessories, but with batteries.
    
  • Size is 168 × 83 × 51mm.
    
  
  
• Probes
  
  
  
  • Probe resistanse 38mOhm for one.
    
  • Probe wire is soft and 102cm long.
    
  
  

Hello everyone, today we will see the Ruike Trekker LD43 sent for the occasion by Ruike, whom I thank for the opportunity and trust given to me.





CLICK HERE to go to the official product page on the Ruike's website.


Official features taken from Ruike:

- one-hand operatione and lockable blade
- sandvik 12C27 blade material
- G10 knife handle
- locking mechanism
- tungsten steel breaking cone
- pocket clip design

Where to buy

You can purchase the LD43 from FENIX OUTFITTERS

The packaging and accessories

The Trekker LD43 comes in a sturdy cardboard box, wrapped inside a lighter cardboard sheet which will show the mark and motto of the company.



On the back there are some information about Ruike, where we can see that it is an offshoot of the famous brand Fenix.



Sliding the paper, we can put a hand to the robust box



on which side is pasted a sticker that shows the model name.



then you can open the box by removing the cover upwards.



Once removed everything from the packaging, we should have:

- the Trekker LD43
- sheet for warranty
- the manual in English, Chinese and Spanish



Afterwards, the pages of the manual. You can view it by downloading it from the site Ruike.




The multi-purpose knife

The Trekker LD43 is one of the multipurpose knife from Ruike that aims to meet various needs in a rescue situation but, looking to the components that compose it, is good even to covering up various tasks in outdoor use.
The handle external yellowish/light green, is in G10 and offer an excellent grip.

The steel used is the Sandvik 12C27 (58 ~ 59 HRC). For the uninitiated, is the same which is used in the famous and appreciated Morakniv knives. Although, in this case, hardening heat treatment has generated a stronger steel than the famous Morakniv (who 57 ~ 58 HRC).

The blade of LD43 has a profile tip drop point and the opening is controlled by a thumb stud that allows the opening by using only one hand. The location of this one, and the fact that is placed only on the left side of the blade,  make it comfortable to use only to the right-handed.

On the blade there are the Ruike name,



the model name and the type of steel used.



The touch between the various components is virtually absent and everything flows quite nimbly.



The main blade is the only tool to have the safety lock (liner lock) and it performs very well on his work.



Here is the multi-purpose knife, blade retrieved, in all of its glory.



Just next to the mail blade, there is the serrated blade that is great for cutting fabrics and/or cordage.



After the serrated blade is the saw, that really bite the wood very well.



Ending this side, we have the bottle opener that also work as a flat screwdriver, a wire strippers and fold cables



and a small carabiner to attach the LD43 to backpacks or pants. I turned the multi-purpose knife for convenience. Also notice the presence of the clip. Bottle opener and carabiner share the same magazine.



The tweezers is stuck in the grip



and once extracted, we can note that covers a length of about 2/3 than the multi-purpose closed.



In the tail, on the left from the same side of the clip, there is the tungsten tip that is great to break the panes when needed.



Here it is the tip on the profile.



On the opposite side are the Phillips screwdriver



and awl for wood/needle for leather.



Here are some test with main blade,



with the saw for wood



with the serrated blade/belt-cutters,





with the bottle opener,





with the fold cables,







with the wire strippers,





with the awl,



with the tweezers,



and with the screwdriver.



To be able to bring with us the knife, we can use small removable carabiner for hanging on the pants



or to the backpack.



Alternatively you can use the clip.



I made also a video where I show the key features of the knife (able the english subtitles by the gear). Good vision




Dimensions: dimensions and weight

The LD43 measure 11,50x3x2.30 closed and weighs 203 grams.
Regarding the size of the main tools, the smooth blade is 8 cm long, serrated blade is 7 cm long while the saw is 8.5 cm long.

Here's the picture of how the multi-purpose, when closed, is hosted in a medium sized hand.



Here is the LD43 compared with a big BIC lighter,





compared to a Victorinox Huntsman (91 mm)





and compared to a Leatherman Style PS






Personal considerations

What can I say? This Ruike Trekker LD43 proved to be a good product. Stainless steel 12C27 is very suitable for outdoor use, looking to the presence of a large hacksaw, a good knife and G10 handle that offers a good grip.

Always remaining in blade theme, I found great the one-hand opening. Even if you have to become skilled to make a smooth opening looking that don't help the size of multipurpose.
Very good the blade-lock and the absence of touch between the parties, the only "flaw" is that it isn't optimized for lefties.

The color of the bolsters may or may not like ... some might find it a bit too showy, but personally I like it.

What do you think? Would you buy it?

DMM BSide ZT302



This is a cheap DMM with all common function.



The meter arrived in a fairly anonymous multimeter box, but the checked illustration on the back matches the meter.



It included the DMM, a pair of probes and a manual.




The probes has removable tip covers, but is only rated for CAT-II, even with the covers on.



The plug is fully shrouded, but is slightly smaller than standard probe plug size.





When using the tilting bale the meter is nearly stable enough to turn the switch, but the meter is very smooth and will easily slide around.










Display



The above picture shows all the segments on the display, not all segments are used on this meter.



Typical display during usage, it will show the number and what measurement is selected.
The current software version has a bug, in manual ranging the manual annotation will disappear when using the range button.


Functions



Buttons:

• Range: Will disable auto range and change range, hold down to activate auto range.
  
• Rel: Shows values relative to current value, will also select manual range. Press again to disable.
  
• Max/min: Starts recording maximum and minimum value (This mode will also select manual range), press to select between max/min.
  
• Hz %: Shows frequency and duty cycle in AC voltage ranges.
  
• Hold (Blue): Freezes the display, hold down for backlight.
  
• Select (Yellow): Select the ranges printed with yellow and steps frequency in square out.
  

• Off: Meter is turned off
  
• V: Show DC or AC voltage, using the HZ button to select frequency and duty cycle in AC.
  
• mV: Show DC or AC mV (Frequency cannot be selected here).
  
• : Resistance, continuity, diode and capacitance.
  
• Hz %: Measure frequency and duty cycle (Use the Hz % button to select).
  
• A mA: High current range for AC and DC.
  
• uA: Low current range for AC and DC.
  
• : Square wave out, use yellow button to select 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000 and 5000 Hz.
  
• Off: Meter is turned off
  

• 10A mA: High current, it is not stable when current gets near 10A
  
• uA: The lower current ranges.
  
• CON: The common terminal for all ranges.
  
• xxx: All other ranges.
  

• Volt and frequency
  
  
  
  • At 100mVrms input frequency range is from 1Hz to 5.2MHz
    
  • At 1Vrms input frequency range can be stretched to 7.4MHz
    
  • Max/min needs about 400ms to capture a voltage.
    
  • 1 VAC is 5% down at 2.2kHz (RMS will not work at this frequency).
    
  • Frequency counter and duty cycle needs a zero crossing
    
  • Duty cycle works from 2% to above 99% at 100kHz with 1Vpp, precision is within 0.2 (Mostly 0.1).
    
  • Input impedance is 10-11Mohm on DC and AC
    
  • mV range is high impedance for DC and 10Mohm for AC
    
  
  
• Current
  
  
  
  • A range will give audible alarm at 10A.
    
  • A range cannot handle near 10A, shunt will heat up and reading will change significantly (1A).
    
  • Current is protected by a 0.2A/250V fuse and 10A/250V fuse.
    
  • Current ranges are only rated for 36VDC and 25VAC
    
  
  
• Ohm, Continuity, diode and capacity
  
  
  
  • Ohm needs about 2.3s to measure 100ohm
    
  • Ohm is 1V open and 0.36mA shorted
    
  • Continuity is fast (About 20ms).
    
  • Continuity beeps when resistance is below 50ohm.
    
  • Continuity is 1V open and 0.36mA shorted
    
  • Diode range uses 3.2V, max. display is 3V at 0.12mA, max. current is 1.6mA shorted
    
  • 70000uF takes about 9 seconds to measure.
    
  • The specifications says not to input voltage in these ranges.
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 1.7mA and 2mA in AC mode (9mA with backlight).
    
  • Meter works down to 2.2V where it turns off, battery symbol show at 2.4V.
    
  • Reading is stable with changing battery voltage.
    
  • Backlight only works down to about 2.6V where it is fairly dim.
    
  • The meter usual need a few display update to reach the final value.
    
  • Viewing angle is good, except from the top.
    
  • Display updates around 3 times/sec
    
  • Backlight will automatic turn off in about 120 seconds.
    
  • Will automatic turn power off in about 15 minutes.
    
  • Standard probes cannot be pushed fully down.
    
  • Weight is 249g without accessories, but with batteries.
    
  • Size is 161 × 80 × 40mm.
    
  
  
• Probes
  
  
  
  • Probe resistance 56mOhm for one (One probe was defective).
    
  • Probe wire is soft and 65cm long.
    
  
  

DMM Klein Tools MM600



Klein Tools say their meters are robust. I am not going to test that, but it feels that way.



I got this meter without a box, but in the holster.



It contained the meter, the holster, probes, alligator clips, thermocoupler, batteries and a manual (This manual can also be downloaded). It was missing an adapter for the termocoupler, it is supposed to be there.




The standard probes are normal sizes and rated for 10A



And CAT II 1000V or CAT III 1000V/CAT IV 600V depending on the tip covers.



The plugs are fully shrouded and standard probe size.




The alligator clips can be mounted when the tip covers are removed and gives CAT III 1000V protection.




The thermoprobe has a standard thermocoupler connector and requires an adapter in the multimeter.



The range switch is rubberized and a bit hard to turn, but the heavy meter with the rubber cover can keep the meter is place for single handed usage both when meter is lying on the table or standing on the tilting bale.











Display



All the segments are shown during power on.



Typical display during usage, it will show the number and selected measurement



Functions



Buttons:

• Range: Manual range, hold down to switch back into automatic ranging.
  
• Rel: Store current display value and show all new values relative to this value.
  
• Max/min: Capture max and min values.
  
• Hold: Freeze display value.
  
• Sel (Orange): Select functions with orange text: DC V/A, ohm, diode, duty cycle, Celsius.
  

• °F °C: Show temperature, this is an American meter and starts in Fahrenheit.
  
• uA: Microampere range, starts in AC
  
• mA: Milliampere range, starts in AC
  
• 10A: Ampere range, starts in AC
  
• Off: Turns meter off.
  
• V: Shows voltage, starts in AC
  
• : Continuity, ohm and diode (It starts in Continuity).
  
• : Capacity
  
• Hz: Show frequency and duty cycle.
  

• 20ADC: 20A current input.
  
• mA uA: Lower current input.
  
• xxx: All other ranges
  
• COM: The common terminal for all ranges
  

• Volt and frequency
  
  
  
  • 5V AC readings is 5% down at 2.2kHz
    
  • Input impedance is 10-11Mohm
    
  • At 100mVrms input frequency range is from 1Hz to 500kHz
    
  • Duty cycle works from 5% to above 94% at 100kHz with 1Vpp, precision is within 5 (Higher amplitude will improve precision slightly).
    
  • Duty cycle works from 1% to above 99% at 10kHz with 1Vpp, precision is within 0.3 (It is spot on, except the lowest and highest few percent).
    
  • Max/min needs about 500ms to capture a voltage.
    
  • Frequency counter requires a zero crossing.
    
  • Input protection is 1000V DC/AC
    
  
  
• Current
  
  
  
  • 10A range is fused with a 10A/1000V fuse
    
  • mA range is fused with a 0.5A/1000V fuse
    
  • 10A range has an audible alarm at 10A or above.
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm needs about 3s to measure 100ohm
    
  • Ohm voltage is 1V open and 0.25mA shorted.
    
  • Continuity is very fast (About 6ms).
    
  • Continuity beeps when resistance is below 50ohm.
    
  • Continuity is 1V open and 0.25mA shorted
    
  • Diode range uses 3.3V, max. display is 3.000V at 0.09mA, max. current is 1mA shorted
    
  • Input protection is 600V DC/AC
    
  • Meter uses about 6 seconds to measure 1000uF
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is around 1.4mA (17mA with backlight)
    
  • Meter turns off at 2.2V, battery symbol show at 2.4V.
    
  • Backlight stays on with stable brightness independent of battery voltage.
    
  • Readings are correct until the meter turns off.
    
  • Viewing angle is good, except from the top
    
  • Display updates around 3 times/sec
    
  • Will automatic turn background light off in about 180 seconds.
    
  • Will automatic turn power off in about 30 minutes.
    
  • Standard probes fits in the meter.
    
  • The meter usual need a couple of display update to reach the final value.
    
  • Weight is 418g without accessories, but with batteries.
    
  • Size is 178 × 90 × 53mm
    
  
  
• Probes
  
  
  
  • Probe resistance 23mOhm for one (This is very low).
    
  • Probe wire is 80cm long.
    
  
  

DMM Aneng AN101



This is a fairly cheap pocket DMM with most functions.



The DMM comes with its own box.



The probes are rather small, here it is besides a normal sized probe.
They are marked 400V 200mA, CATII, i.e. lower CAT rating than the meter.



The plugs are not shrouded and considerable smaller than standard probes.





The box has a few tricks, it can be used as a stand or it can protect the meter from splashes



The meter uses a CR2032 battery.












Display



All segments on the display.



Typical display during usage, it will show the number and selected measurement.



Functions



Buttons:

• Select: Select between diode and continuity and select AC in current ranges.
  
• Range: Manual range, hold down for returning to auto.
  
• Hold: Freeze the display
  

• Off: Meter is turned off
  
• VAC: AC voltage ranges (mV must be manually selected).
  
• VDC: DC voltage ranges.
  
• : Resistance range
  
• : Diode and Continuity.
  
• uA: microampere
  
• mA: milliampere
  
• Off: Another position that will turn the meter off
  

• Red: The positive terminal for all ranges.
  
• Black: The negative terminal for all ranges.
  

• Volt and frequency
  
  
  
  • 1V AC volt readings drops 5% at about 2.4kHz
    
  • Input impedance is 10Mohm to 11Mohm
    
  • mV DC is high impedance.
    
  • Rated voltage is 600V DC/AC rms
    
  
  
• Current
  
  
  
  • uA and mA range is unfused, but protected by PTC.
    
  • uA and mA range will sound a buzzer when overloaded
    
  
  
• Ohm, continuity, diode and capacity
  
  
  
  • Ohm needs about 3.2s to measure 100ohm (It will show 10ohm before 100ohm).
    
  • Ohm voltage is 0.4V open and current is 0.25mA shorted.
    
  • Continuity is moderate fast (About 100ms).
    
  • Continuity beeps when resistance is below 40ohm.
    
  • Continuity is 0.44V open and 0.25mA shorted
    
  • Diode range uses 1.5V, max. display is 0.999V at 0.24mA, max. current is 0.74mA shorted
    
  
  
• Miscellaneous
  
  
  
  • Current consumption of meter is 0.8mA (DC and ohm) to 1.4mA (AC and current)
    
  • Meter displays values down to 1.2V where it turns off, battery symbol show at 2.3V.
    
  • Readings will decrease value below 2.1V, 5V reading dropped to 4.83V before it turns off.
    
  • Viewing angle is good, except from top
    
  • Display updates around 2 times/sec
    
  • Will turn automatic off after about 15 minutes.
    
  • Neither standard probes or banana plugs can be used
    
  • The meter usual need a couple of display update to reach the final value.
    
  • Weight is 51.1g without accessories, but with batteries (97.6g in box with probes).
    
  • Size is 110 × 55 × 14mm (126 × 80 × 19mm in box)
    
  
  
• Probes
  
  
  
  • Probe resistance 46mOhm for one.
    
  • Probe wire is fairly soft and thin, they are 30cm long.
    
  
  

DMM UNI-T UT33D+



This is a fairly simple DMM with manual ranges and a minimum of functions.



The box is for all the UT33 meters with a checkmark for the actual model and a table on the back for comparing the models (in Chinese).
If you want all the function, you must buy all the models, none of them can everything.



In the box was the meter, probe leads and a instruction sheet. The instruction sheet is for all four models in the series (A, B, C, D).




The standard probes are about normal size, but rating them for 10A is on the optimistic side.



The plugs are fully shrouded.



With the meter lying flat it is possible to turn the switch, but on the tilting bale it will slide around.










Display



All the segments are shown during power on.



Typical display during usage, it will show the number and selected measurement



The NCV detector will show bars depending on field strength and the buzzer will sound when anything is detected.


Functions



Buttons: