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DROK 0.56 Inch DC 3-30V Digital Voltmeter Voltage Tester Gauge Green Bright LED Display Two Wires Volt Meter for Solar Battery Monitor Car Motor Panel Mount

4.4 4.4 out of 5 stars 623 ratings

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Purchase options and add-ons

Brand DROK
Power Source Solar,battery Powered
Style Digital
Color Green,Black
Item Weight 0.27 Pounds

About this item

  • High accuracy: Its decimal point will automatically move, and It also has a tiny potentiometer to do finer adjustments.
  • Easy to connect wires: It only has two wires, the red connects to positive and the black connects to negative.
  • Safe to use: with reversed connection protection, it will not be burnt even when connected reversely, but the screen display nothing.
  • Large screen and bright LED display, and it is well made, the strong plastic case prevents it from easily damaged by outer force.
  • It is perfect to monitor the condition of the battery, especially for solar projects, you can use it on your car, trailer, motor, etc.

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1.89 x 1.14 x 0.87 inches; 4.32 ounces
  • Item model number ‏ : ‎ 090079
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ March 28, 2013
  • Manufacturer ‏ : ‎ DROK
  • ASIN ‏ : ‎ B00C2NTJHS
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.4 4.4 out of 5 stars 623 ratings

Product Description

Technical Parameters:
Dimension: 48×29×22mm
Cutting size: 46×27mm
Measuring voltage range: DC 3-30V
Maximum input: DC 30V (if the input voltage is higher than DC30V, the voltmeter will be burnt)
Minimum input: DC 3V (if the input voltage is lower than DC 3V, the value will be inaccurate or not displayed)
Measurement accuracy: Less than 10V, accurate to 0.01V; More than 10V, accurate to 0.1V (allowable tolerance: 1% +/- 1 word)
Display: 3 digit 0.56'' LED digital tube
Font Color: Green
Refresh rate: about 200mS
No need power supply
Consuming current: less than 20mA (generally 5-15mA)
Operating temperature: -10°c-65°c
Wire length: 20cm
Reverse connection protection: YES
Method of wiring:
Red wire: Positive
Black wire: Negative
Note:
Please don't use this meter in 24V battery because when the battery is full-charged, its voltage will be about 30V
(the max input volt for this meter), and we don't suggest you use it in max volt of 30V.
Package Includes:
1× 0.56'' Voltmeter

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
623 global ratings

Customers say

Customers like the performance, brightness, value, accuracy, and readability of the electric circuit testing device. For example, they mention it works great, the display is bright, and the intensity of the LEDs has not degraded. That said, they say it's a great product for the price and provides a low cost method for anyone to use. As for the readability, they're happy with the numbers being easy to read.

AI-generated from the text of customer reviews

182 customers mention176 positive6 negative

Customers are satisfied with the performance of the electric circuit testing device. They mention that it works great, has a superb display, and is accurate. Some say that the meter is small and has fried two of them. Overall, most are happy with their purchase and recommend it to others.

"...It works great, looks awesome, and now allows me to instantly check battery levels without crawling under the front bunk with a portable meter,..." Read more

"...Unit was easy to mount and is working fine." Read more

"Works great. I installed it in a small project box from Radio Shack and provided it with a 12 V cigarette lighter plug and wire...." Read more

"...switched power 12v constant and found a nice ground spot and it works like a charm i get my voltage from battery this way and when running ..I love..." Read more

113 customers mention83 positive30 negative

Customers like the brightness of the electric circuit testing device. They say the display is bright and easily seen at a distance. They also say the faint green glow is soothing at night. Customers also say that the intensity of the LEDs has not degraded, and the display stays bright and flicker-free.

"...The digital read-out is nice and large, bright, and easy to see from a distance...." Read more

"...'s under a cover that is closed most of the time, and it's great for daytime visibility, but not so much for low-light environments." Read more

"Nice bright display; accuracy is right on as confirmed by my Fluke 87 meter. Only change I'd make is to add a pot on the back to adjust brightness...." Read more

"...One possible drawback is that the display is very bright, too bright for dashboard use at night...." Read more

84 customers mention84 positive0 negative

Customers are satisfied with the value of the electric circuit testing device. They mention that it provides a low-cost method for anyone to use for any need. Some say that the product is an excellent buy and an excellent young company.

"...But the proof is in the pudding. This little fellow has grit. Well worth the cash!" Read more

"This meter does exactly what it's supposed to do, and at a excellent price...." Read more

"...I would buy again. Good price!!!! The only niggle I have is the lead wires were cut in half and were very short...." Read more

"...Still a good value for the money." Read more

70 customers mention67 positive3 negative

Customers are satisfied with the accuracy of the electric circuit testing device. They mention that it is accurate, and can be adjusted to a large meter. The display is bright and clear, and it provides a relatively accurate eyeball gauge of the health of your battery. It was calibrated fairly well, and is the perfect meter for a solar system's batteries.

"This was the perfect meter for a solar system's batteries where the owner did not want to invest in a fancier and much more expensive meter...." Read more

"This voltmeter does what I need to monitor a 12-volt AGM battery. It's accurate, it seems to have a low current draw, but it's very bright...." Read more

"Nice bright display; accuracy is right on as confirmed by my Fluke 87 meter. Only change I'd make is to add a pot on the back to adjust brightness...." Read more

"Nice bright display. Accurate out of the box too." Read more

55 customers mention50 positive5 negative

Customers find the electric circuit testing device easy to read. They mention that the numbers are large, bright, and clear. The indicator lights are also easy to see. The product is easy to install and provides a true reading all the time.

"...The digital read-out is nice and large, bright, and easy to see from a distance...." Read more

"...It can be read in low or high light because of the green color...." Read more

"...Installed directly to the battery posts, the reading is perfectly in sync with my Fluke test and reads fluctuations very quickly...." Read more

"This little digital display is bright and clear, it is as accurate as any digital voltmeter...." Read more

42 customers mention42 positive0 negative

Customers find the electric circuit testing device easy to install and hook up. They mention it works well, is easy to mount, and is self explanatory. Customers also say it's accurate and easy to connect.

"...It was super easy to install, but I added a 1/2 amp inline fuse on the positive lead so that if later the home owner or someone else messed with..." Read more

"...Unit was easy to mount and is working fine." Read more

"...Easy to install if you understand electrical and come up with a plan for where you want it and how to get it there." Read more

"Really a great little device lights up easy to read wasn't anything to install I did have to make a little longer lines that I saw a turd to make a..." Read more

41 customers mention41 positive0 negative

Customers like the battery voltage of the electric circuit testing device. They say it's a nice meter for monitoring voltage, with large, bright digits and very accurate readings. Some say that the voltmeters are quite nice and use very little power. They also say it’s perfect for any project and useful to know your battery voltage.

"...It works great, looks awesome, and now allows me to instantly check battery levels without crawling under the front bunk with a portable meter,..." Read more

"This little guy does exactly what it was promised, can read the voltage power very easily!..." Read more

"This is a great little voltage monitor and is exactly what I was looking for!..." Read more

"...The exact voltage is important, and thanks to this meter, I'm getting results better than I expected." Read more

39 customers mention30 positive9 negative

Customers like the quality of the electric circuit testing device. They say it's well-made, reliable, and perfect for their needs. Customers are also impresseded with the dependability and say it is a useful little gadget. Overall, customers are happy with the quality and performance of the product.

"...It's package is complimentary as well as versatile. Brightness was VERY vivid outside on a clear day...." Read more

"Pro'sWell made, plastic housing, they offer waterproof models as well.ProblemsI bought (7) of these for various projects...." Read more

"...I have used other Drok components and have been happy with reliability and performance." Read more

"...I left off one star as the plastic is not exactly top quality. But the proof is in the pudding. This little fellow has grit. Well worth the cash!" Read more

Good, nothing special
4 Stars
Good, nothing special
Is accurate for the most part, sometimes goes .1 up or down but usually stays consistent. Once I opened it I noticed this is meant for a certain product, there’s clips on the back of the battery monitor that lock in to something, but the plug that comes with it, allows you to wire anything which works out. I used Velcro strips to attach mine to counter of my van.
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Top reviews from other countries

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Baruj Covarrubias L.
4.0 out of 5 stars Buena marcación legible
Reviewed in Mexico on December 31, 2023
Amazon Customer
5.0 out of 5 stars Looks great, works great
Reviewed in Canada on April 27, 2021
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Amazon Customer
5.0 out of 5 stars Looks great, works great
Reviewed in Canada on April 27, 2021
Looks great, install was fairly simple. Certainly no challenge for someone who has done a similar project before or has a diy inclination. Highly recommend it if you run your accessories on battery power frequently and don't like risking draining your battery.
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Kim Renwick
5.0 out of 5 stars Good meter
Reviewed in Canada on January 11, 2022
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Kim Renwick
5.0 out of 5 stars Good meter
Reviewed in Canada on January 11, 2022
This meter is awesome to fill the broken meter on my carbon pile. It moves with the voltage drop instantly and gives accurate info perfect color and brightness
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Amazon Customer
4.0 out of 5 stars Works fine , basic but functional
Reviewed in Canada on April 16, 2021
Diesel
5.0 out of 5 stars Bright and easy to see
Reviewed in Canada on January 31, 2022