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1.76 mi | Ashburn 20147
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diymore 5PCS 0.28" Volt Amp Meter Digital Voltmeter Ammeter DC 100V 10A Waterproof Dual Display Current Voltage Meter Mini Ammeter Voltmeter 3 Bits Dual LED Display Panel(Red-Blue)
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Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Bundles with this item
Purchase options and add-ons
| Brand | diymore |
| Power Source | Battery Powered |
| Style | Voltage Tester |
| Color | Red-Blue |
| Item Weight | 0.01 Ounces |
About this item
- Volt Amp Meter Display: Volt meter display range: DC 0 - 100V
- Digital Panel Amp Meter: The measuring range of our dc current meter is DC 0 - 10A
- Display: 0.28" digital tube, Two color red and blue.
- Working voltage: DC 4-30V (The maximum input voltage can not exceed 30V. Otherwise the meter will be burned)
- Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the functionality, value for money, and display quality of the electric circuit testing device. They mention it works well, is well worth the money, and has a nice display. However, some customers have mixed opinions on accuracy, ease of installation, quality, voltage display, and brightness.
AI-generated from the text of customer reviews
Customers like the functionality of the product. They mention it works perfectly for their projects, is easy to get working, and is a good product. Some say the DIYmore variant has a decent shunt on the ammeter side and calibration pots for both.
"...load common is above the power supply common, but they work well for many applications...." Read more
"...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...." Read more
"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..." Read more
"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...." Read more
Customers appreciate the value for money of the electric circuit testing device. They mention it's well worth the money, has a bright display, and is less expensive than mechanical meters. Some say it's a nice addition to any project and turns GPIO relays on and off.
"These are a nice low cost enhancement to small electronic projects. Good display and easy to read...." Read more
"...can even see the amps slowly rise as I turn gpio relays on and off, very cool!" Read more
"...Bright display, less expensive than mechanical meters, smaller size too. Need better instructions...." Read more
"These are really nice for the price and size. I've used mine for a master DC power panel to operate Holiday decorations outside the house...." Read more
Customers are satisfied with the display quality of the electric circuit testing device. They mention it looks great, is easy to read, and provides live data.
"These are a nice low cost enhancement to small electronic projects. Good display and easy to read...." Read more
"...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...." Read more
"...for so I can easily monitor the loads on each body part with live easy to see data, with cut off switches close and at the ready in case he tries to..." Read more
"...With all said, I am happy with the design and the display. I am ordering another 5 meters incase another one fails." Read more
Customers have mixed opinions about the accuracy of the electric circuit testing device. Some mention it's fairly accurate over the 8-24V 40-400mA range, while others say it needs calibration to avoid inaccurate readings. The voltage accuracy is only good around +/-20% of the value that's trimmed.
"...Consider the accuracy to be a rough approximation rather than a precision measurement. Very satisfied." Read more
"...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..." Read more
"...two of them showed accurate results, the other three showed smaller current values when compared to Fluke ammeter...." Read more
"...pi to monitor for voltage sags and current spikes, it is surprisingly accurate, you can even see the amps slowly rise as I turn gpio relays on and..." Read more
Customers have mixed opinions about the ease of installation of the electric circuit testing device. Some mention it's easy to install and use, while others say there are no instructions and the correct wiring is not intuitive.
"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..." Read more
"No instructions. Not even the tiny ones that the Chinese love. They work as they should...." Read more
"...Fortunately it's easy to do. There are two small potentiometers on the back that require a size 1 or 2 slot screwdriver...." Read more
"...No directions; although this seems to be not uncommon as directions for most hobby electronics can be found on-line...." Read more
Customers have mixed opinions about the quality of the electric circuit testing device. Some mention it's well-packaged, while others say it has poor quality control and frail wires.
"...Having said all the above, they are a great value and the construction is very good. Instructions can be found on YouTube...." Read more
"...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...." Read more
"...the current won't display until it reaches 40mA, but I'm pleased with the overall quality...." Read more
"Frail, tiny wires. But works ok" Read more
Customers have mixed opinions about the voltage display of the electric circuit testing device. Some mention it displays voltage and amprage, while others say it won't display amperage.
"...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...." Read more
"...It is my fault but I didn't notice that it can't measure positive and negative currents (there is no minus sign on the display)...." Read more
"...variant has a decent shunt on the ammeter side and calibration pots for both voltage and current. Not all variants have this." Read more
"...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...." Read more
Customers have mixed opinions about the brightness of the electric circuit testing device. Some mention it has a bright display, while others say the led digits make the output dim and somewhat fuzzy.
"...The display is good and well lit to be able to track both the voltage and current values...." Read more
"...One problem is that the plastic shield over the led digits makes the output dim and somewhat burry...." Read more
"...Bright display, less expensive than mechanical meters, smaller size too. Need better instructions...." Read more
"...I would recommend them for non precision applications. The 3-1/2 digit display is bright and large enough for most applications." Read more
Reviews with images
Usually great, just got one bad batch.
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Top reviews
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Reviewed in the United States on November 24, 2024
Reviewed in the United States on November 27, 2024
Reviewed in the United States on January 28, 2021
Reviewed in the United States on September 17, 2024
Reviewed in the United States on December 7, 2023
Reviewed in the United States on December 12, 2022
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.
Reviewed in the United States on March 16, 2023
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.
Reviewed in the United States on March 16, 2023
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.
Reviewed in the United States on September 25, 2024
Top reviews from other countries
5.0 out of 5 stars Works good
Reviewed in Canada on March 23, 2024
Ok
1.0 out of 5 stars Labeled as 10pc, parcel came with only one inside
Reviewed in Canada on August 26, 2023
2.0 out of 5 stars Poor Quality Control
Reviewed in Canada on May 25, 2024
At least these all powered on and displayed values.
3 of 5 units were faulty - with grossly inaccurate current values displayed
I have had much better luck buying suh meters from eBay
though there is a longer wait for the product,
at least they all work correctly.
1.0 out of 5 stars received items do not match images included in the description
Reviewed in Canada on August 7, 2023
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