0.28 inch DC 100V 100A LED Digital Ammeter-Voltmeter With Shunt

(7 customer reviews)

In stock

SKU: 43375
  1. Operating Voltage: 5V DC.
  2. Current Consumption: <60mA
  3. Testing Voltage: 0-100V
  4. Testing Current: 1-100A
  5. Easy to read even in dim light


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Brand: Generic
Category: Digital Voltage, Current and Frequency Meter
Tags: LED Display, Voltmeter, Ammeter, Shunt Resistor, digital ampere meter

This is 0.28 inch DC 100V 100A LED Digital AmmeterVoltmeter With Shunt. This meter will measure up to 100 VDC with a 0.1-volt resolution.

One thing to note is, this meter has 2 wiring harnesses. One harness is to provide power for the meters, that’s the 2 poles with a RED and a BLACK lead. Small size, portable, the magnitudes of voltage, and current are displayed on the same screen at the same time.

This can be supplied anywhere from 6 volts DC up to 30 VDC. This is a separate power supply that is isolated from the source, it is possible to use the same supply but it seems to affect the amp meter reading. The 3 wire harness is used for a ground that connects directly to the battery or supply ground of the load.


There are different wiring variants with the same working functionality is available which will be shipped randomly. 

If the input voltage is more than 5V then please use the buck converter.


Features :

  1. It measures up to 100V and 100A DC.
  2. Very handy and small in size.
  3. It requires a power supply of 5V.
  4. 100% Brand new and high quality.

Package Includes:

1 x Dual LED Panel Ampere Voltage Meter.

1 x Current Shunt.




Red and Blue

Operating Voltage (VDC):


Current Consumption (mA)


Testing Voltage (V)

0 to 100

Testing Current (A)

1 to 100

Refresh Speed (ms)

500 (one time)

Operating Temperature (°C)

-10 to 60

Height (mm):


Length (mm):


Width (mm):


Shunt Resistor Dimensions (mm)

120x25x20 (LxWxH)

Weight (g):


Shipping Weight 0.018 kg
Shipping Dimensions 13 × 5 × 4 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. 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 7 reviews

5.0 overall

Add a review

  1. srajesh1268 (verified owner)

    Good product


  2. gagankh (verified owner)

    Product is good,I am using it with 13.8 volt ,30 ampere power supply.Shunt provided with it is big one and measurement upto 40 ampere are with in 10% accuracy.As told by other buyer,you have to give power to meter to measure current i.e donot omit meter power supply back wire but connect it to power source,otherwise no amperes will be shown.Slighty expensive but satisfactory meter.


  3. bbahavati (verified owner)

    Nice and small Ammeter, Voltmeter gives accurate volts and Current of Batteries. Use shunt if you have very high current. I use it in 12V Battery, so, I use the same battery power for the meter too. If you test for different power greater than 36v, then use separate 12V for Meter Power. The diagram says to leave the meter negative without wiring, but when I do, it won’t show current. So, I give battery negative to the Meter negative and battery positive to Meter positive. Rest of the circuit is fine as per diagram. I used shunt for safety, but for low voltage/ current, we don’t need shunt. It is a very good meter and small enough to fit in many electronic projects. Buy again.


  4. heavenlal (verified owner)

    Good device and calculating current and voltage correctly.


  5. Chandan Ghosh


    Chandan Ghosh

  6. vimal (verified owner)



  7. VIMAL PANDYA (verified owner)




Connection Diagram

Questions and answers of the customers

    how do we wire it up
  1. 0 votes
    Q how do we wire it up answer now
    Asked by meetbrindha on May 7, 2024 6:23 am
    A Connection diagram for this product is available i... Read more
  2. what is the accuracy of ampere meter
  3. 0 votes
    Q what is the accuracy of ampere meter answer now
    Asked by Salikzaki67 on March 31, 2024 2:42 am
    A The 0.28-inch DC 100V 100A LED Digital Ammeter-Vo... Read more
  4. what is the value of the shunt resistor
  5. 0 votes
    Q what is the value of the shunt resistor answer now
    Asked by scdascsr on January 20, 2022 11:42 am
    A The shunt resistor included with the 0.28 inch DC ... Read more
  6. Can it be used to measure both charging and discha... Read more
  7. 0 votes
    Q Can it be used to measure both charging and discharging current of Inverter battery ? answer now
    Asked by surajitde61 on June 7, 2021 3:47 pm
    A Yes, it can be use to measure both charging and di... Read more
  8. Can it be used to measure negative supply voltage ... Read more
  9. 0 votes
    Q Can it be used to measure negative supply voltage and current answer now
    Asked by kirangothe on February 18, 2021 9:12 am
    1. Testing Voltage: 0-100V
    2. Testing ... Read more
Only registered users are eligible to enter questions
Country Of Origin: China

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