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Your cart is empty.Product Description
Attention:
- 10A below ammeter (include 10A), built-in shunt, does not require external shunt.
- The maximum input voltage can not exceed 30V. Otherwise the meter will be burned.
Package Included: 5pcs* 0.28'' Volt Amp Meter(Red-Blue)
3 Bits Dual LED Display Panel
- 0.28" digital voltmeter ammeter
- Red+Blue
Integrated Shunt, could use it directly
- DC 100V 10A Amp Voltage current volt amp meter tester integrated shunt.
- You don't need to purchase extra shunt
5 Wires Definition:
- Black line (thick): Cathode of vacant circuit or descending circuit (module)
- Red line (thick): Power supply +
- Black line (thin): COM, common measurement
- Red line (thin): PW +, measurement terminal voltage input is positive
- Yellow line (thin): IN +, current input +
Rick Shamel
Reviewed in the United States on September 25, 2024
I recenly bought 10 of these for use on a couple of projects. While the voltmeter section worked well the ammeter section gave wild and usless results. In most cases I was reading 40+ AMPS when I had less then 2 amps going though the device. On some units I would see a low reading on the display even when no wires were connected to the shunt. On other units I would see 0.00 on the display until I had 0.25 or more amps going through the shunt and then the display would show much higher current values than what was actually going through the device. Two of the units read 0.00 amps until the current got up to about 1.00 amp then suddenly the display would jump to 2.00 amps and increase to 2.02 amps when the current though the device went up to 2.00 amps.One unit completly failed after 10-15 min of use. I'll put tape over the ammeter part of the display and use the remaining units when I want a voltmeter and look for something else to display current. A real disapointment but at least not total loss.
Murgatroyd
Reviewed in the United States on September 17, 2024
They work just fine. Simple to wire in. I didn't think about having to cut an exact-sized hole to mount them, but I'll manage...
Gerald
Reviewed in Canada on May 25, 2024
Only slightly better than "Linkstyle" as a supplierAt least these all powered on and displayed values.3 of 5 units were faulty - with grossly inaccurate current values displayedI have had much better luck buying suh meters from eBaythough there is a longer wait for the product,at least they all work correctly.
nate
Reviewed in Canada on March 23, 2024
All 👍Ok
Leighana
Reviewed in the United States on November 27, 2024
If you don't know how and why these can read voltage and amperage don't bother. They work perfectly...well, within reason. If you don't understand what a shunt is and are measuring under 5 or 6 amps, you're good to go. If you don't know what a shunt is and are measuring over 20 amps, buy a fire extinguisher also
Ken
Reviewed in the United States on November 24, 2024
These are a nice low cost enhancement to small electronic projects. Good display and easy to read. A bit odd since the negative is used as the current input so the load common is above the power supply common, but they work well for many applications. They work as described and show consistent readings meter to meter. Consider the accuracy to be a rough approximation rather than a precision measurement. Very satisfied.
Dave
Reviewed in Canada on August 7, 2023
Items do not match images shown in the description. The shunt resistor is not an alloy wire. There is no trim pot for adjusting the current measurement. The current readings are always at least 20-30% higher than expected. The voltage reading only shows 2 digits instead of 3 when the measured value is less than 10 volts.
Y.S.CA
Reviewed in Canada on August 26, 2023
Refund requested.
BK
Reviewed in the United States on March 16, 2023
So I buy these for work and for my own pet projects at home.They work great, and for the price, are a great bargain.Just pay attention to the wiring. They colors of the heavy wires are misleading if your barging ahead and assuming, and not paying strict attention to the wiring instructions.None of my own shipments have every been problematic as far as the meters working.This last shipment I ordered for work, of 2 packs of 5, were problematic, and the meters did not look like all the others.In the past, the others were slightly different. But this set was very different looking.Orders in Jan 2022 and earlier were great.Order in late Feb 2023 was great.Order in Jan 2023, had this bad batch, which looked very different.That Feb 2023 bad batch, all did not work, and several smoked. The one I had here for testing, when powered with a lab supply with 12vdc, it drew 300ma, no display, and climbed quickly to 700ma, and I turned off the power. That meter was on it's way to releasing the magic smoke.So look at the pictures. the one that says Bad (red text), was from the bad batch, all look the same in the batch. Comparatively to a good meter, it has nearly no components in the very middle of the PCB on the visible side of the PCB. And it has that table near center / bottom of the PCB , with 'HW" on it.The other picture, is of a good working / tested meter. And all my good ones look similar, but with some minor differences in component layout.So when the new order arrives, we will inspect and test, before waiting for a build.
Laynae
Reviewed in the United States on July 4, 2022
Not a bad little meter, especially for the price. Fairly accurate over the 8-24V 40-400mA range that I'm using them for. The Voltage and Current adjustments on the back are a bit finicky, and the current won't display until it reaches 40mA, but I'm pleased with the overall quality. I'm sure I'll be buying several more before my project is complete.
windsurfer
Reviewed in the United States on December 12, 2022
Out of five meters, two of them showed accurate results, the other three showed smaller current values when compared to Fluke ammeter. Perhaps there is an adjustment pot on these meters somewhere on the PCB, but right out of the box three were not up to the spec. I chose the one closest to my multimeter readings. The display is good and well lit to be able to track both the voltage and current values.Update: The seller reached me about calibrating voltage and current readings on these meters. The meters have two calibration potentiometer screws, one for voltage and one for current. So, you need to adjust them against a standard if your meter is off. So, I am upgrading the product to five stars.
Elec/CS engineer
Reviewed in the United States on January 28, 2021
No instructions. Not even the tiny ones that the Chinese love. They work as they should. One problem is that the plastic shield over the led digits makes the output dim and somewhat burry. On the plus side, the shield can be removed (not really needed) and both the voltage and current sections can be individually adjusted for accuracy. The accuracy was certain acceptable and useable for the price but I was able to adjust to be more accurate against my five digit multimeter and very accurate voltage standard (of course, better but not equivalent). Hyper accuracy is typically not required since these units are mainly used in power supply. You can also remove the casing from the circuit board if you like. Having said all the above, they are a great value and the construction is very good. Instructions can be found on YouTube. Some are wrong and some are poorly done (too many amateurs), so I would suggest watching four or five and make you own diagrams, which is what I did. Luckily, the units are pretty tolerant of being hooked up incorrectly and the correct wiring is not intuitive (for example, a common voltage current measure situation, the thin black wire is not connected to anything.) Lastly, I say all this being a graduate EE.
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