---
product_id: 28274208
title: "Pack of 5 Three-Wire Calibratable DC 0~30V Red Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36\" Red LED Display Panel"
brand: "bayite"
price: "81 zł"
currency: PLN
in_stock: true
reviews_count: 11
category: "Bayite"
url: https://www.desertcart.pl/products/28274208-pack-of-5-three-wire-calibratable-dc-0-30v-red
store_origin: PL
region: Poland
---

# 0.01V accuracy 0~30V range Calibratable screw Pack of 5 Three-Wire Calibratable DC 0~30V Red Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Red LED Display Panel

**Brand:** bayite
**Price:** 81 zł
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay powered, stay precise — never miss a volt!

## Quick Answers

- **What is this?** Pack of 5 Three-Wire Calibratable DC 0~30V Red Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Red LED Display Panel by bayite
- **How much does it cost?** 81 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/28274208-pack-of-5-three-wire-calibratable-dc-0-30v-red)

## Best For

- bayite enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Reverse polarity protection guards your device from accidental damage
- • **Custom Calibration:** Adjust readings on the fly with an easy-access calibration screw
- • **Wide Voltage Range:** Measures from 0.00 to 30V—captures every detail below 3V unlike standard meters
- • **Compact & Bright Display:** 0.36" red LED panel ensures clear visibility in any lighting
- • **Precision Voltage Monitoring:** Ultra-accurate 0.01V resolution for critical battery insights

## Overview

The bayite Pack of 5 Three-Wire Calibratable Digital Voltmeters deliver professional-grade voltage monitoring from 0 to 30V with 0.01V accuracy. Featuring a bright 0.36" red LED display and a handy calibration screw, these compact meters are perfect for automotive and motorcycle battery diagnostics. Reverse polarity protection ensures durability, making them a reliable tool for precise voltage measurement in demanding environments.

## Description

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

Review: Great size, excellent function. - Great size, excellent function.
Review: DVM is cheap and reasonably accurate for my application - I’m using this to monitor the state of charge of a LiFePo4 battery in my camper van, so I need accuracy between 12.9-13.4V. I calibrated the first unit to transition from 13.3 to 13.4 with a precision input crossing 13.35V. I’ll define a sub count as a change in the input of 0.01V. This mini DVM uses a micro with a 12 bit ADC, supporting a resolution below 0.01V, or 1 sub count (divide 30V range by 2^12). The voltage reference for the ADC comes from a cheap LDO regulator with +/-3% accuracy, which is why the calibration screw is needed. The specified variation of this LDO reference voltage suggests at most +\- 2 sub counts of accuracy loss between 50-100 degrees F ambient temperature, which is not bad. The long term drift of this reference is unspecified, and probably the most serious impact on accuracy over time. But again, a yearly recalibration should take care of that. I’ll check back in a year with an update. One last thing I’ll mention is the input (white wire) current. It is not quite zero. My measurement suggests there is a 125kohm resistor attenuator (probably 10:1) between the input and ground. So even if the unit is switched off (red wire opened) expect some current drain into input. For example, 0.1mA with a 12v input. Low enough for me to leave connected to my battery at all times, but about 10 times more current then a typical fluke DVM.

## Features

- 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: Red;
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00YALUXH0 |
| Best Sellers Rank | #69,889 in Automotive ( See Top 100 in Automotive ) #31 in Automotive Voltmeter Gauges |
| Brand | bayite |
| Brand Name | bayite |
| Color | red |
| Customer Reviews | 4.6 out of 5 stars 662 Reviews |
| Item Dimensions | 0.9 x 0.55 x 0.39 inches |
| Item Weight | 0.01 Pounds |
| Item dimensions L x W x H | 0.9 x 0.55 x 0.39 inches |
| Lower Temperature Rating | 14 Degrees Fahrenheit |
| Manufacturer | bayite |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 3 Volts (DC) |
| Model | 3B001x5 |
| Part Number | 3B001x5 |
| Style | Digital |
| Style Name | Digital |
| UPC | 711463670098 |
| Unit Count | 5.0 Count |
| Upper Temperature Rating | 149 Degrees Fahrenheit |

## Product Details

- **Brand:** bayite
- **Color:** red
- **Item Weight:** 0.01 Pounds
- **Item dimensions L x W x H:** 0.9 x 0.55 x 0.39 inches
- **Style:** Digital

## Images

![Pack of 5 Three-Wire Calibratable DC 0~30V Red Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Red LED Display Panel - Image 1](https://m.media-amazon.com/images/I/61iMNnewyhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great size, excellent function.
*by R***L on February 8, 2026*

Great size, excellent function.

### ⭐⭐⭐⭐⭐ DVM is cheap and reasonably accurate for my application
*by C***A on August 19, 2024*

I’m using this to monitor the state of charge of a LiFePo4 battery in my camper van, so I need accuracy between 12.9-13.4V. I calibrated the first unit to transition from 13.3 to 13.4 with a precision input crossing 13.35V. I’ll define a sub count as a change in the input of 0.01V. This mini DVM uses a micro with a 12 bit ADC, supporting a resolution below 0.01V, or 1 sub count (divide 30V range by 2^12). The voltage reference for the ADC comes from a cheap LDO regulator with +/-3% accuracy, which is why the calibration screw is needed. The specified variation of this LDO reference voltage suggests at most +\- 2 sub counts of accuracy loss between 50-100 degrees F ambient temperature, which is not bad. The long term drift of this reference is unspecified, and probably the most serious impact on accuracy over time. But again, a yearly recalibration should take care of that. I’ll check back in a year with an update. One last thing I’ll mention is the input (white wire) current. It is not quite zero. My measurement suggests there is a 125kohm resistor attenuator (probably 10:1) between the input and ground. So even if the unit is switched off (red wire opened) expect some current drain into input. For example, 0.1mA with a 12v input. Low enough for me to leave connected to my battery at all times, but about 10 times more current then a typical fluke DVM.

### ⭐⭐⭐⭐⭐ Small meter, big view
*by M***L on August 13, 2019*

These little meters are perfect for the small projects I always come up with requiring low voltage monitoring. The read out is surprising bright and clear and the option to have a separate lead to turn on the display when needed rather then being on all the time is very handy. The picture shown is supposed to be vertical and shows to AC power meters monitoring phase A and phase B of the 50 amp input to the RV and the DC meter this review is about below them is monitoring the DC voltage out of the convertor when plugged in or the battery voltage when not plugged in. The only minor problem I have with them is the mounting holes are very small and close to the circuit board making mounting the board a careful consideration so as not to short out anything. The price is right!

## Frequently Bought Together

- bayite Pack of 5 Three-Wire Calibratable DC 0~30V Red Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Red LED Display Panel
- 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 available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-06-03*