5PCS 0.28" Mini DC Digital Voltmeter 0–100V – 2-Wire & 3-Wire LED Voltage Meter (Red / Blue / Yellow / Green)

This 0.28-inch mini DC digital voltmeter set includes 5 pieces, ideal for voltage monitoring in power supplies, DIY electronics, automotive systems, and industrial control panels.
It supports both 2-wire and 3-wire connections and offers multiple LED display colors for easy reading in different environments.

Key Features

• 2-Wire & 3-Wire Compatible

  • 2-wire mode: Powered by measured voltage (DC 2.5–30V)

  • 3-wire mode: Wide measurement range up to DC 0–100V

• No External Power Supply Required

• Clear 0.28" LED Digital Display

  • <10V: 2 decimal places

  • ≥10V: 1 decimal place

• Multiple LED Colors Available

  • Red / Blue / Yellow / Green

• Reverse Polarity Protection

• Fast Refresh Rate (~100ms)

• Compact Size – Ideal for Panel Mounting

Specifications

• Measuring Range:

  • 2-wire: DC 2.5–30V

  • 3-wire: DC 0–100V

• Accuracy: ±1% ( >10V error ±0.1V )

• Input Resistance: ≥ 50KΩ

• Display: 3-digit 0.28" LED digital tube

• Refresh Rate: ~100ms

• Lead Length: Approx. 20cm

• Dimensions: 30 × 11.5 × 9 mm

• Mounting Hole Spacing: 26mm (hole diameter 2.4mm)

• Net Weight: Approx. 4g (each)

• Operating Temperature: -10°C to +80°C

• Operating Humidity: 10%–80% RH

• Atmospheric Pressure: 80–106 kPa

Package Includes

• 5 × DC Digital Voltmeter

• Selected wire type and LED color

Notes

• For voltages above 40V, please use 3-wire mode to avoid damage.

• Suitable for DC voltage only (not for AC).