---
product_id: 633002513
title: "Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester"
brand: "robotbanao"
price: "$97.24"
currency: USD
in_stock: false
reviews_count: 5
category: "Robotbanao"
url: https://www.desertcart.ec/products/633002513-robotbanao-dual-led-0-28-red-blue-display-digital-voltmeter
store_origin: EC
region: Ecuador
---

# 0-100V Voltage Range 10A Current Measurement Dual Red-Blue LED Display Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester

**Brand:** robotbanao
**Price:** $97.24
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Power up your precision — never miss a volt or amp again!

## Quick Answers

- **What is this?** Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester by robotbanao
- **How much does it cost?** $97.24 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/633002513-robotbanao-dual-led-0-28-red-blue-display-digital-voltmeter)

## Best For

- robotbanao enthusiasts

## Why This Product

- Trusted robotbanao brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Color LED Precision:** Instantly read voltage and current on a vibrant red-blue display for clear, no-mistake monitoring.
- • **Versatile Wiring Options:** Supports both shared and separate power sources with dual wiring harnesses for flexible installation.
- • **Compact & Portable Design:** Sleek 48x29x21mm size fits effortlessly into any toolkit or dashboard setup.
- • **User-Calibratable Accuracy:** Fine-tune current and voltage readings with easy-access calibration screws to suit your exact needs.
- • **Wide Voltage Compatibility:** Accurately measures DC voltage up to 100V, perfect for automotive and motorcycle battery diagnostics.

## Overview

The Robotbanao Dual LED Digital Voltmeter Ammeter is a compact, dual-display meter designed for real-time voltage (0-100V) and current (up to 10A) monitoring. Featuring a vibrant red-blue LED screen, it offers clear simultaneous readings, user calibration for enhanced accuracy, and flexible wiring options to suit various automotive and electrical applications. Ideal for professionals and enthusiasts seeking reliable, portable electrical diagnostics.

## Description

This is Red-Blue LED Digital Dual DC 100V 100A Ammeter Voltmeter. 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. Digital Voltmeter is an instrument used to measure the electrical potential difference between two points in a circuit. Digital Voltmeter displays the voltage readings of a circuit numerically.

Review: Negative voltage cannot be measured and return path current you cannot check ( these two things present it will be a higher cost in market) other than that very good product. If you want to measure current then connect the ammeter in positive side. Worth for price and delivered on time. I don't know current is not showing while taking load. But it's okay to me. I would like to measure only voltage ⚡.
Review: The product is very good. You may find a slight difference in the amps but that can be calibrates by turning the star screw at the back labelled I. The screw labelled V is for votage, and that will mostly not need calibration. When I received the device, the amps were high by 800 mA (0.8A). After calibrating the amps is now high by only 30mA (0.03A). PS. Its not possible to calibrate the Amps to exact 0.000 if you do so the actual reading during a load test will show a lesser value. The lowesr value the amps can be calibrated to is 0.03A and the reading will always show 30mA - 60mA more. At 0.00A the reading will show 0.03A and around 1.00A the reading will show 1.06A The Meter can be connected in 2 correct circuit methods. The Thick Black wire is the Neutral Line The Thick Red wire is used to check the Amps The Thin yellow wire is to check the Volts The thin red wire is to power the meter. The thin Black wire is also neutral line but is to be only used when the meter power source is seperate from the load power source. If power source is same DO NOT CONNECT this wire any where. Also the Amp meter wire has to be connected in series AFTER the load, NOT Before else it won't work. 1. Correcting to the same power source as the Load. Here the power source has to be 4V to 30V else the meter will not work. This will help you measure voltage from 4V to 40V. Below 4V the meter will go off. 2. Correcting to a seperate power source from the Load. Here the power source for the meter has to be 4V to 30V else the meter will not work. This will help you measure voltage from 0V to 40V.

## Features

- The Robotbanao Digital Voltmeter Ammeter converts analog signal into a train of pulses.
- Very handy | Compact | Power supply of 5V required | Convenient
- Dimensions(LxWxH):48x29x21mm
- The digital voltmeter ammeter can be used to measure the storage battery's voltage upto 100V in motorcycles and cars.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DZY2MMB |
| ASIN  | B07DZY2MMB |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Black |
| Customer Reviews | 3.8 3.8 out of 5 stars (780) |
| Customer reviews | 3.8 3.8 out of 5 stars (780) |
| Date First Available | 8 June 2020 |
| Date First Available  | 8 June 2020 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 40 g |
| Item model number | DO-72OF-EC3J |
| Item model number  | DO-72OF-EC3J |
| Manufacturer | Sound Land Corp |
| Manufacturer  | Sound Land Corp |
| Part number | EAEC100100-316 |
| Product Dimensions | 4 x 4 x 2 cm; 40 g |
| Product Dimensions  | 4 x 4 x 2 cm; 40 g |
| Size | small |
| Style | compact |

## Product Details

- **Brand:** Robotbanao
- **Colour:** Black
- **Item dimensions L x W x H:** 40 x 40 x 20 millimeters
- **Item weight:** 40 Grams
- **Style:** compact

## Images

![Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester - Image 1](https://m.media-amazon.com/images/I/31+sHMipKJL.jpg)
![Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester - Image 2](https://m.media-amazon.com/images/I/41CdjV8unaL.jpg)
![Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester - Image 3](https://m.media-amazon.com/images/I/41e2Zaed0YL.jpg)
![Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester - Image 4](https://m.media-amazon.com/images/I/614Q-Kv5ZOL.jpg)
![Robotbanao Dual LED 0.28” Red-Blue Display Digital Voltmeter (0-100V) and Ammeter (10A)-LED Display-Digital Voltmeter Ammeter-Voltage Current Tester - Image 5](https://m.media-amazon.com/images/I/61R2zBlQlBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***N on 22 January 2024*

Negative voltage cannot be measured and return path current you cannot check ( these two things present it will be a higher cost in market) other than that very good product. If you want to measure current then connect the ammeter in positive side. Worth for price and delivered on time. I don't know current is not showing while taking load. But it's okay to me. I would like to measure only voltage ⚡.

### ⭐⭐⭐⭐ Review
*by M***. on 25 February 2020*

The product is very good. You may find a slight difference in the amps but that can be calibrates by turning the star screw at the back labelled I. The screw labelled V is for votage, and that will mostly not need calibration. When I received the device, the amps were high by 800 mA (0.8A). After calibrating the amps is now high by only 30mA (0.03A). PS. Its not possible to calibrate the Amps to exact 0.000 if you do so the actual reading during a load test will show a lesser value. The lowesr value the amps can be calibrated to is 0.03A and the reading will always show 30mA - 60mA more. At 0.00A the reading will show 0.03A and around 1.00A the reading will show 1.06A The Meter can be connected in 2 correct circuit methods. The Thick Black wire is the Neutral Line The Thick Red wire is used to check the Amps The Thin yellow wire is to check the Volts The thin red wire is to power the meter. The thin Black wire is also neutral line but is to be only used when the meter power source is seperate from the load power source. If power source is same DO NOT CONNECT this wire any where. Also the Amp meter wire has to be connected in series AFTER the load, NOT Before else it won't work. 1. Correcting to the same power source as the Load. Here the power source has to be 4V to 30V else the meter will not work. This will help you measure voltage from 4V to 40V. Below 4V the meter will go off. 2. Correcting to a seperate power source from the Load. Here the power source for the meter has to be 4V to 30V else the meter will not work. This will help you measure voltage from 0V to 40V.

### ⭐⭐⭐⭐⭐ Review
*by A***E on 14 October 2024*

This voltmeter and ammeter combo is fantastic! The display is clear, and it accurately measures voltage and current. It’s a great addition to my toolkit. Highly recommend for anyone needing reliable readings!

## Frequently Bought Together

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-22*