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This is a mini DC voltmeter with LED display. Thanks to the small dimension it can be easily integrated into your project. It has three wires (yellow/white, red and black) and can measure up to 100V.
High precision Reverse connection protection The decimal point is automatically shifted Able to adjust voltage resistance - Turn clockwise to lower voltage, it can work directly in 5v, 9v, 12v, 24v. Three-wire connection, but it can also change three lines to 2-wire connection.
Specification
Power Supply: 3.5 ~ 30V Measured Voltage: 0 ~ 100V (3-wire mode) 3.5 ~ 30V (2-wire mode) Working Current: < 20 mA Working Temperature: -10 +65 Measure Speed: 200ms a time Accuracy: 3% Dimensions: 34mm × 14mm × 9mm Mounting opening: 23mm × 14 mm
Usage Guide
This voltmeter has three wires, and they are:
Yellow/White: Anode of measured voltage Red: Anode of power supply for the voltmeter Black: Common cathode of measured voltage and power supply
If the actual measured voltage is higher than 3.5V and is lower than 30V, you can also join the red and yellow wires. In this case the measured voltage will also work as the power supply for the voltmeter.
