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bayite Pack of 5 Three-Wire Calibratable DC 0~30V Blue Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Blue LED Display Panel

4.6 4.6 out of 5 stars 814 ratings
$11.99 with 20 percent savings
List Price: $14.98

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Purchase options and add-ons

Brand bayite
Power Source Battery Powered
Style Voltage Tester
Color Blue
Item Weight 4.54 g

About this item

  • This is Three-Wire Voltmeter. Three-Wire connection enable the Voltage Test Rang from 0.00 to 30V. (Two-wire meters cannot measure the voltage that is below 3V);
  • Measurement Accuracy: 0.01(0.01 - 9.99V) / 0.1(10.0 - 30.0V); And the meter is CALIBRATABLE: The screw on the back is used to Calibrate the meter.
  • BRIGHT & NICE Reading: Display: Three 0.36" digital LED Tube; Display Color: BLUE;
  • Reverse Polarity Protection: The meter won't burn out if reverse polarity is applied, but the screen will display nothing
  • NOTE: When measured voltage is larger than 30V, the voltmeter will be damaged.

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This product has fewer returns than average compared to similar products.

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bayite Pack of 5 Three-Wire Calibratable DC 0~30V Blue Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Blue LED Display Panel

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 0.9 x 0.55 x 0.39 inches; 0.16 ounces
  • Item model number ‏ : ‎ CECOMINOD000239
  • Date First Available ‏ : ‎ May 26, 2015
  • Manufacturer ‏ : ‎ bayite
  • ASIN ‏ : ‎ B00YALV0NG
  • Customer Reviews:
    4.6 4.6 out of 5 stars 814 ratings

Product Description

bayite Pack of 5 Three-Wire DC 0~30V Mini Digital Voltmeter, Easy to Calibrate

NOTES: When measured voltage is larger than 30V, the voltmeter will be damaged.

Main Specifications:

  • Overall Dimension: 23mm x 15mm/0.9" x 0.59", Thickness: 10mm/0.39"
  • Mounting Hole Center Distance: 28mm
  • Measure Voltage: DC 0~30V
  • Working Voltage: DC 3V-30V
  • Measurement Accuracy: 0.01(0.01 - 9.99V) / 0.1(10.0 - 30.0V);
  • Display: Three 0.36" digital LED Tube
  • Measurement rate: 300mS / times
  • Operating Temperature: 14 ~ 149 °F(-10 ~ 65 °C)
  • Reverse protection: Yes
  • When measured voltage is below 10V: the voltmeter displays two decimal digits, for example, 5.32V
  • When measured voltage is larger than 10V, the voltmeter displays one decimal digit, for example, 10.5V

Wiring:

  • Red wire: Power supply +
  • Black wire: Power supply -, Measured Voltage -
  • White wire: Measured Voltage +

Package Includes:

5x DC 0-30V Voltmeter

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
814 global ratings

Customers say

Customers like the performance, accuracy, display, quality and value of the electric circuit testing device. They mention that it works well, is accurate and consistent. They appreciate the small size and the bright blue display. They also appreciate the great value for money.

AI-generated from the text of customer reviews

96 customers mention96 positive0 negative

Customers are satisfied with the performance of the electric circuit testing device. They mention that it works well, is bright, and fairly accurate. The device is widely useful, and the display performs exactly as advertised. It is handy and great for small projects.

"These work great. I have a very accurate digital multimeter and used it to check all 5 (powered from the same 5 volt source)...." Read more

"...However, we did hook them up. They work great! If you're going for a cool looking voltage display they're terrific...." Read more

"...Worked perfectly after that and I could accurately monitor the sensor voltage...." Read more

"Works as expected!!" Read more

52 customers mention48 positive4 negative

Customers are satisfied with the accuracy of the electric circuit testing device. They mention that it has good precise voltage indicators, and the readings are consistent. The quality of the product is excellent, and it holds calibration well. The meters are very useful in monitoring the voltages into and out of regulated power supplies, and are great for monitoring battery state of RV batteries.

"...Once this is done (or confirmed), the device holds calibration well. I won't hesitate to buy more of these if/when needed." Read more

"...Cheap & accurate, and quick delivery. What more could one want?" Read more

"...tester, but overall they're compact, good looking and seem to be relatively accurate. My 12 year old had fun messing with it at very least!" Read more

"This little meter was very accurate, I verified it’s reading with a Fluke. Very simple to use, display is very bright. I only had 1 issue...." Read more

47 customers mention44 positive3 negative

Customers like the display of the electric circuit testing device. They say it's nice, small, and works beautifully. Some say it adds a nice touch to homebrew projects. Overall, most are satisfied with the product and recommend it to others.

"...of adapting one as a battery tester, but overall they're compact, good looking and seem to be relatively accurate...." Read more

"...Good showing." Read more

"...They look and work beautifully." Read more

"...If you "do" electronics they are pretty simple to wire up and add a nice touch to "homebrew" projects...." Read more

47 customers mention42 positive5 negative

Customers like the quality of the electric circuit testing device. They say it's well built, easy to read, and great for electronic hobbyists. Some customers also mention that the product arrived in good condition.

"...Good quality. Highly recommend." Read more

"Very nice...." Read more

"Very nice little volt meters. Bright Blue and easy to read." Read more

"...Good build quality. Bright. Smooth." Read more

43 customers mention43 positive0 negative

Customers find the electric circuit testing device to be a great value for the price. They say it's accurate and works well for the money. Some customers also say the seller is incredible and has great customer service.

"...SUMMARY: These are very accurate meters for the price as long as you understand their limitations. Longevity is still an open question at this point...." Read more

"...Cheap & accurate, and quick delivery. What more could one want?" Read more

"...] I love these displays, they work pretty decently for the money...." Read more

"...The refresh rate isn’t the fastest but they also aren’t the slowest. Great value." Read more

42 customers mention38 positive4 negative

Customers find the electric circuit testing device easy to use. They mention that it's simple to set up, hook up, read, and install. They also say the product works as expected, is super convenient, and easy to calibrate.

"...voltage range of 0-30v is perfect for my application They are very easy to use...." Read more

"...Very simple to use, display is very bright. I only had 1 issue...." Read more

"...If you "do" electronics they are pretty simple to wire up and add a nice touch to "homebrew" projects...." Read more

"...I found the information in someone's review. Easy to wire and a nice readout for the price point...." Read more

39 customers mention32 positive7 negative

Customers like the brightness of the electric circuit testing device. They say that it has a surprising bright display with little current draw. Some customers also mention that the blue 7-segment displays are really bright.

"...It doesn't get much easier than that. Even in daylight the blue display is bright and easy to read...." Read more

"...Bright display, easy to read. Like the Three wire set up for reading voltage of same device or separate one...." Read more

"...Bright with little current draw- I measured only 10ma draw from my 12v battery..." Read more

"...Very simple to use, display is very bright. I only had 1 issue...." Read more

34 customers mention26 positive8 negative

Customers like the size of the electric circuit testing device. They say it's small, compact, and easy to use. Some say the size allows for custom mounting and the display is bright. Some mention that the display size is nice and clear. Overall, most are satisfied with the size and functionality of the product.

"...I'm thinking of adapting one as a battery tester, but overall they're compact, good looking and seem to be relatively accurate...." Read more

"...use one of my many old computer PSU's with a breakout board, these fit nicely and are small enough to stay out of my way but provide very useful..." Read more

"...There small, easy to mount, convienent quick glance lets you see how things are preforming...." Read more

"Product is small, easy to wire, easy to mount, and has a calibration screw to dial in the accuracy...." Read more

Pretty good.
4 Stars
Pretty good.
Put these on our battery bank to check voltage balance within the series.It came in a pack of five.There was .1 or .2 volt difference between them but I calibrated them to be perfect within .01v .Having 1 spare is good because it can be used as the calibrated one to check the others , except I blew it up accidentally by touching the back of it with a screwdriver and shorting it out, be carefull there sensitive.It would be good if the back was covered.You need to extend the wires because they are to short for a vehicle sized battery.
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Top reviews from the United States

Trusting Customer
5.0 out of 5 stars Excellent Performance - With LIMITS!
Reviewed in the United States on November 11, 2023
Verified Purchase
These meters are a great deal! Definitely worth the price. BUT - Read the description carefully.
1) Measurement capability is UNIPOLAR which means you can only measure POSITIVE voltages, NO NEGATIVE input or display is possible like with a digital multimeter or bipolar input panel meter.
2) The measurement Input (White wire) places a heavy burden (load) on the voltage source being measured. Input impedance averages about 100K Ohms. So, they cannot be used to measure high impedance circuitry without a buffer. The typical load placed on the source being measured is less than 1mA, which is okay when measuring low impedance circuitry like batteries, etc. - just a caution.
3) The wire insulation is too stiff and bulky and too short. If you are a skilled solderer (with a temperature-controlled soldering station) you could carefully replace the three wire cable.
4) You really need a blue plexiglass filter in front of the digits to increase contrast of the blue LED's and to make them more easily readable in bright light.
5) Factory calibration for all 5 meters was consistent but low. They all read 14.9VDC on a 15.007VDC calibrated source. That was easily corrected with the help of my Fluke 87V Digital Multimeter. They all now read correctly and linearly from 5VDC to 29VDC.
SUMMARY: These are very accurate meters for the price as long as you understand their limitations. Longevity is still an open question at this point. However, at this price, they are a GREAT value, overall.
2 people found this helpful
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Larry S
5.0 out of 5 stars These work great and are very bright.
Reviewed in the United States on November 11, 2022
Verified Purchase
These are great little devices. I build various size battery packs and use these to determine their state of charge. The wide voltage range of 0-30v is perfect for my application They are very easy to use. If you don't need to measure < 3v than the simple two wire connection is all you need. It doesn't get much easier than that. Even in daylight the blue display is bright and easy to read. All 5 of the voltmeters I received measure accurately and identical. Good quality. Highly recommend.
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Erik
4.0 out of 5 stars Works well, accurate and adjustable!
Reviewed in the United States on June 14, 2019
Verified Purchase
They all seem a accurate, and only had to adjust one of them by 0.1V based on the reading from my Fluke meter. Bright display, easy to read. Like the Three wire set up for reading voltage of same device or separate one.
Dislikes... With the lack of a bezel you need a CNC machine to cut out a accurate hole to mount them and still look nice... See picture.... The wires come out the top of the board... See other picture... So when you mount it thru the plate. You need a couple washers to space it so it rests flat. If the wires were soldered to the other side of the board, this would not be an issue.
Still would recommend
Customer image
Erik
4.0 out of 5 stars Works well, accurate and adjustable!
Reviewed in the United States on June 14, 2019
They all seem a accurate, and only had to adjust one of them by 0.1V based on the reading from my Fluke meter. Bright display, easy to read. Like the Three wire set up for reading voltage of same device or separate one.
Dislikes... With the lack of a bezel you need a CNC machine to cut out a accurate hole to mount them and still look nice... See picture.... The wires come out the top of the board... See other picture... So when you mount it thru the plate. You need a couple washers to space it so it rests flat. If the wires were soldered to the other side of the board, this would not be an issue.
Still would recommend
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2 people found this helpful
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Aubrey Sheldon
5.0 out of 5 stars Work Nicely
Reviewed in the United States on June 5, 2023
Verified Purchase
These work great. I have a very accurate digital multimeter and used it to check all 5 (powered from the same 5 volt source). They did not all read the same, but there is an adjustment potentiometer on the back (you need a very small flat blade or Phillips screwdriver to adjust) that allows you to easily calibrate the meter. Once this is done (or confirmed), the device holds calibration well. I won't hesitate to buy more of these if/when needed.
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Joel Aycock
5.0 out of 5 stars Perfect.
Reviewed in the United States on February 18, 2023
Verified Purchase
Very nice. I measured only 0.05v error uncorrected at 12v (there is a pot to correct in case of larger error, but no correction was necessary in this case).

Bright with little current draw- I measured only 10ma draw from my 12v battery (I tied white & red leads together so that the meter was powered from the battery being measured).

Cheap & accurate, and quick delivery. What more could one want?
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Glenn
5.0 out of 5 stars Does just what I expected!
Reviewed in the United States on April 22, 2024
Verified Purchase
Nothing to dislike. Very bright display was easy to read. Current draw was 12mA. I applied 12.300V (7 1/2 digit DMM) in two wire mode, and it displayed 12.3V, and if it hadn't there is a small pot to tweak.
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Jim H
5.0 out of 5 stars Great simple solution.
Reviewed in the United States on November 14, 2020
Verified Purchase
I purchased these for my son to use on his science fair project but didn't end up using them. However, we did hook them up. They work great! If you're going for a cool looking voltage display they're terrific. I'm thinking of adapting one as a battery tester, but overall they're compact, good looking and seem to be relatively accurate. My 12 year old had fun messing with it at very least!
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Jim
4.0 out of 5 stars Accurate, but may need buffer circuit to monitor low current voltage sources
Reviewed in the United States on July 9, 2020
Verified Purchase
This little meter was very accurate, I verified it’s reading with a Fluke. Very simple to use, display is very bright. I only had 1 issue. I needed it to monitor a low current sensor voltage, and due to the low impedance input of this module, it “drug” down the sensor voltage from 1.8v to 1.4v. To correct this issue, I added a unity gain amplifier (high impedance input 741 op amp configured for a gain of 1) in between the sensor return voltage and this meter. Worked perfectly after that and I could accurately monitor the sensor voltage. Be aware of what you need to monitor, you may need to add circuit to get it to perform correctly. I would recommend this product.
One person found this helpful
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Top reviews from other countries

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Edgar Trujillo
5.0 out of 5 stars Pequeño y sencillo de usar
Reviewed in Mexico on March 14, 2022
Verified Purchase
Fácil de conectar y usar, no estaba bien calibrado, pero es sencillo de ajustar.
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Edgar Trujillo
5.0 out of 5 stars Pequeño y sencillo de usar
Reviewed in Mexico on March 14, 2022
Fácil de conectar y usar, no estaba bien calibrado, pero es sencillo de ajustar.
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Amazon Kunde
4.0 out of 5 stars bayite Pack de 5 mini voltímetro digital de tres cables calibrables DC 0 ~ 30 V azul
Reviewed in Mexico on December 16, 2022
Verified Purchase
Los productos llegaron a tiempo y corresponden a la información, estoy muy satisfecho y lo recomiendo encarecidamente.
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Donald Hebig
1.0 out of 5 stars These are not what was shipped or ordered. There is no calibration screw on the back
Reviewed in Canada on November 25, 2022
Verified Purchase
I disliked the false advertising and different product was shipped than what is advertised. It is missing the voltage calibration screw on the back.
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Donald Hebig
1.0 out of 5 stars These are not what was shipped or ordered. There is no calibration screw on the back
Reviewed in Canada on November 25, 2022
I disliked the false advertising and different product was shipped than what is advertised. It is missing the voltage calibration screw on the back.
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