0.28-Inch 3.5–30V Two-Wire DC Voltmeter – Red LED Display

The 0.28-inch Two-Wire DC Voltmeter is a compact digital voltage display module designed for quick and easy real-time monitoring of DC power systems. With a wide voltage range of 3.5V to 30V and bright red LED display, it’s perfect for battery voltage monitoring, DIY electronics, and power supply diagnostics.

Its two-wire design allows for effortless integration—no need for a separate power supply. Just connect the voltmeter directly across the voltage source you want to measure, and it’s ready to go.

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Key Features

• Wide Voltage Range: Accurately measures DC voltages from 3.5V to 30V

• Compact Display: 0.28-inch bright red 3-digit LED for clear visibility

• Two-Wire Design: No separate power source needed—measures and powers from the same connection

• Easy Installation: Compact size fits easily into project panels or dashboards

• Low Power Consumption: Minimal drain on the system being monitored

• Reverse Polarity Protection: Prevents damage due to incorrect wiring

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Technical Specifications

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Package Includes

• 1 × 0.28-Inch Red LED DC Voltmeter (3.5V–30V, Two-Wire)