0.28inch 4.5-30V Two Wire DC Voltmeter Red

(1 customer review)

In stock

SKU: 29812
  1. Operating Voltage: 4.5-30 VDC
  2. It is a 2-wire display.
  3. LED Color: RED
  4. Current Consumption : < 15 mA.
  5. Accuracy: 0.1 V.
  6. Refresh Speed : Approx 200mS/time.
  7. Measure accurately up to  3.6 V


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Category: Digital Voltage, Current and Frequency Meter
Tags: LED Display, Voltmeter, 2 Wire LED Voltmeter, Red LED Display

This is tiny and compact digital voltmeter with red LED Display. 0.28inch 4.5-30V Two Wire DC Voltmeter Red  Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!!

The red wire is to connect to the positive pole, the black wire is to connect to the negative pole. No need to worry even if there is any connection mismatch of the wires, the electric circuit won’t be a boom because it features reverse polarity protection.

This voltmeter doesn’t need external drive working power, it can work with measuring voltage, the working voltage’s range is 3.5-30V. To reach the best measurement accuracy, this voltmeter will automatically move the decimal point’s position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point.

This voltmeter can be used to measure the storage battery’s voltage in motorcycles and cars and also can grasp the storage battery’s status. It also can be used to measure other voltage. 30V is the voltmeter’s maximum operating limited voltage, please leave enough margin when working, to avoid voltmeter’s permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage.

Very bight and decent LED Display is ready to measure the dc voltages in the range of 4.5V to 30V.

Connections :

Red Wire: source +ve terminal.

Black Wire: Source -ve terminal.

Note: The display weight and Dimensions may have ±2% error.

We also have the same module in two different colors as(click on the color name below for more information)



Features :

  1. Very small and lightweight voltmeter module.
  2. Very handy and easy to use.
  3. Red LED display.
  4. Don’t need the external power supply because it is a self-powered version of this display.
  5. Best operates in the working voltage range of 5V to 24V
  6. 100% Brand new and high quality.

Package Includes :

1 x  0.28inch 4.5-30V Two Wire DC Voltmeter Red


0.1 V





Display ON Voltage (V)


Operating Voltage (VDC)

4.5 ~ 30

Current Consumption (mA)


Refresh Speed (ms)

200 (one time)

Minimum Input (V)


Highest Input (V)


Operating Temperature (°C)

-10 to 60

Holes for Mounting

3 mm

Height (mm):


Length (mm):


Width (mm):


Weight (g):


Shipping Weight 0.05 kg
Shipping Dimensions 5 × 3 × 3 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 1 review

5.0 overall

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  1. Sohan Bhure

    1 pic

    Sohan Bhure

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Country Of Origin: China

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