0.28inch 0-100V Three Wire DC Voltmeter – Green

0.28″ 3-Wire Digital Voltmeter LED Display (DC 0-100V) is a compact and bright voltage measurement module designed for monitoring DC power systems. With its high-visibility red LED display and simple 3-wire connection, this voltmeter is perfect for automotive applications, power supplies, battery monitoring, and DIY electronics projects.

Key Features:

• • High-Visibility Display: Bright 0.28″ red LED digits
  • Wide Measurement Range: DC 0-100V with 0.1V resolution
  • Simple Connection: Only 3 wires needed (VCC, GND, VIN)
  • Low Power Consumption: Operates on 4.5-30V DC
  • Compact Design: Small footprint for easy integration

Technical Specifications:

• • Display Type: 3-digit 7-segment LED (red)
  • Measurement Range: DC 0-100V
  • Resolution: 0.1V
  • Accuracy: ±1% ±1 digit
  • Refresh Rate: Approximately 500ms
  • Operating Voltage: 4.5-30V DC (shared with measured voltage)
  • Current Consumption: ≤20mA
  • Display Size: 0.28″ digit height
  • Operating Temperature: -10°C to +65°C

Mechanical Characteristics:

• • Dimensions: 23mm × 14mm × 10mm
  • Digit Height: 0.28″ (7mm)
  • Weight: Approximately 3 grams
  • Material: Plastic housing with LED display
  • Mounting: Through-hole pins or adhesive backing
  • Color: Black body with red LED display

Wiring Connection:

• • Red Wire (VCC): Connect to positive power (4.5-30V)
  • Black Wire (GND): Connect to ground/common negative
  • Yellow Wire (VIN): Connect to voltage being measured

Installation Notes:

• • Ensure measured voltage does not exceed 100V DC
  • For best accuracy, connect power supply separately from measured voltage
  • Reverse polarity protection included for power inputs
  • Display remains visible in bright lighting conditions

Typical Applications:

• • Automotive: Battery voltage monitoring in cars/motorcycles
  • Power Supplies: Output voltage display for DIY PSUs
  • Solar Systems: Battery bank voltage monitoring
  • RC Vehicles: Battery level indication
  • DIY Projects: General-purpose voltage measurement

Equivalent Models:

• • 0.36″ LED Voltmeter: Larger display version with same functionality
  • 3-Wire Digital Ammeter: Current measurement version

Keywords:

• • 0.28″ Digital Voltmeter
  • 3-Wire LED Voltmeter
  • DC 0-100V Voltage Meter
  • Mini Digital Voltmeter
  • LED Panel Meter

Package Includes:

• • 1 × Green 0.28″ 3-Wire Digital Voltmeter Module
  • 1 × 15cm wire harness (pre-attached)