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0.28inch Digital Voltmeter

0.28inch Digital Voltmeter

Regular price £3.16
Regular price £3.37Sale price £3.16
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The 3-Wire Digital Voltage Tester is a compact and reliable mini DC voltmeter designed for precise voltage measurement across a wide range of applications. Featuring a bright LED display and user-friendly functionality, this voltmeter is ideal for monitoring voltage in cars, electric bicycles, motorcycles, and various battery-powered devices.

Key Features:

  1. Stable Operation: Ensures accurate and reliable voltage measurements for a wide range of applications, providing consistent results and confidence in your electrical systems.
  2. High Measurement Accuracy: Offers precise readings, allowing you to monitor voltage levels with confidence, suitable for critical applications and sensitive electronic devices.
  3. Compact Size: Small and compact design (30x12x9mm) makes it easy to install and integrate into various configurations, requiring minimal space.
  4. Reliable Circuit Protection: Equipped with reverse polarity protection, ensuring the voltmeter is not damaged if the wiring is reversed, enhancing safety during installation and use.
  5. Ease of Use: Automatically adjusts the decimal point position based on the measured voltage, includes a fine-tuning function, and comes with three cables for easy and simple connection.


  • Measuring Range: 0-100V
  • Working Voltage: DC 2.4V to 40V (with reverse connection protection)
  • Detection Voltage: 0.0V to 100V
  • Working Current: <30mA
  • Display: 0.28" LED, available in red, blue, green, and yellow
  • Measurement Rate: ≥200ms/time
  • Measurement Accuracy: ±3%
  • Input Impedance: >50KΩ
  • Size: 30x12x9mm (1.18x0.47x0.35 inches)
  • Lead Length: 15cm
  • Weight: 2g


  • Range: 0-100V
  • Wiring: Three cables for easy connection to car/motorcycle batteries and other circuits.
  • Reverse Connection Protection: Prevents damage if wires are connected incorrectly.
  • Decimal Adjustment: Automatically adjusts the decimal point for precise measurement.
    • Below 10V: Two digits after the decimal point.
    • Above 10V: One digit after the decimal point.
  • Low Voltage Indication: Screen brightness dims below 3.0V without affecting accuracy.
  • Operating Conditions:
    • Voltage Range: 2.4V to 40V
    • Max Input Voltage: 100V (exceeding this may cause damage)
    • Working Temperature: -10°C to +65°C
    • Humidity: 10% to 80% (non-condensing)
    • Air Pressure: 80kPa to 106kPa


  • Voltage monitoring for 18650 batteries, mobile phone lithium batteries, and nickel-metal hydride battery packs.
  • Voltage measurement in motorcycles, cars, and other battery-powered devices.
  • Suitable for various voltage measurement purposes in DIY projects and electronic applications.

Package Contents:

  • 1 x 3-Wire Digital Voltage Tester with LED Display


  • The actual color of the item may slightly vary due to different monitor and light effects.
  • Allow 1-2cm measuring deviation due to manual measurement.

This 3-Wire Digital Voltage Tester is a reliable and accurate tool for voltage measurement, offering high precision, ease of use, and robust protection features in a compact and versatile design.



Shipping Policy

- Free Shipping: We offer free Domestic shipping on all orders Over £25!
- UK Stock: Stocked in our UK Warehouse.
- Same-Day Dispatch: Orders placed before 3 PM will be dispatched on the same day.
- Tracked Service Upgrade: Orders over £20 will be automatically upgraded to a tracked service at no additional cost.
- Shipping Providers: We primarily ship via Royal Mail 48, but we reserve the right to use any provider and/or an equivalent service*.

Important Information:

- Delivery Address: Once your order is placed, we cannot change the delivery address. Please ensure the correct address is provided at checkout.
- Incorrect Address: If you realize you’ve provided the incorrect address, Contact us as soon as possible. We will assist you in canceling your order so you can reorder with the correct address.
- Post-Dispatch: Once your order has been dispatched, we are unable to cancel or change the shipping address. The buyer is responsible for any issues and costs related to incorrect shipping addresses. If there are issues with the delivery and the item is returned to us, a refund will be provided. We will not reship the item.

Returns Policy

We offer Free Domestic Returns on All Products.

If you are experiencing issues with our products, please contact us. We will do
everything we can to assist you. If this does not resolve your issue, you may
open a return request , and a return label will be

Please note:

To receive a refund, you MUST return the item.

The item MUST be returned within 60 Days of purchase.

The item MUST be returned in its original condition, including all packaging and accessories.

If the item is faulty, please clearly describe the issue you are experiencing. This helps us evaluate and process the return swiftly.

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