0.28inch 0-100V Three Wire DC Voltmeter Red

0.28″ 0–100V Three-Wire DC Digital Voltmeter – Red LED Display

This compact digital voltmeter with a bright 0.28-inch red LED display is designed to provide accurate and real-time voltage readings for a wide range of DC applications. With a simple three-wire connection, setup is quick and straightforward—ideal for hobbyists, automotive diagnostics, DIY electronics, and more.

Thanks to its built-in reverse polarity protection, accidental wiring mistakes won’t damage the device. The voltmeter automatically adjusts the decimal point for better readability:

• Below 10V: displays two decimal places (e.g., 9.58V)

• Above 10V: displays one decimal place (e.g., 48.7V)

It supports dual-source measurements, meaning it can be powered by one source while measuring another, as long as both share a common ground.

With a measurement range of 0V to 100V, this voltmeter is perfect for monitoring battery levels (in cars, motorcycles, etc.), power supplies, solar systems, or any low-voltage DC setup. For optimal safety and longevity, avoid continuous use above 30V without proper filtering, as sudden voltage spikes can cause permanent damage.

Wiring Guide:

• Red Wire: +V (Power Supply Positive)

• Black Wire: GND (Common Ground for Power Supply and Measured Source)

• Yellow/White Wire: +V (Voltage Source to Measure)

Case 1: If measuring the same source that powers the voltmeter, connect all three wires to the same source.
Case 2: If measuring another voltage source, ensure both sources share a common ground.

⚠️ Note: Display weight and dimensions may vary ±2%.

Features:

• Ultra-compact and lightweight design

• Easy 3-wire installation

• Wide input voltage range: 0V to 100V DC

• Working voltage: 5V to 24V DC

• Auto decimal point adjustment for enhanced accuracy

• Bright red LED for clear visibility

• Reverse polarity protection

• Ideal for automotive, DIY electronics, and battery monitoring

Package Includes:

• 1 x 0.28″ 0–100V Three-Wire DC Digital Voltmeter – Red LED