DC 4V-30V Mini 0.28 inch Red LED Digital Voltmeter 2wire

The voltmeter is a compact mini DC 4-30V voltage measuring device to measure 2 line and 2 wire products, general use, break through voltage meter, is the latest design, can work directly in 5V, 9V, 12V, 24V and other circuits, without voltage regulation. Equipped with three wiring, easy access to the car / storage battery car / motorcycle inside line, with reverse connection protection function, line connection will not burn. Used to monitor the battery voltage, timely grasp the state of battery voltage, can also be used for other products voltage measurement purposes.

Note that the 2 line using the highest input voltage shall not exceed 30V, otherwise there is danger of burnout.

Specifications:

• 2 line working voltage: 4.0~30V (with reverse connection protection function)
• 2 wire detection voltage: 4.0~30V
• Operating current: <20mA
• Display: 0.28, “LED”, red
• Size: 33 x 10.7 x 8.2 mm (length * width * height)
• Installing openings: 28.5 * 10 mm
• The measurement rate: more than 200mS/ times
• Measuring accuracy: 3 per thousand
• Extreme working condition
• Low operating voltage: +4.0V
• Maximum operating voltage: +40V
• Operating temperature: -10 ~ +65 DEG C
• Working humidity: 10 ~ 80% (without gel)
• Working pressure: 80 ~ 106kPa

Package Includes:

1 x 0.28mm mini voltmeter

Wiring:

• red: power supply +
• black: power supply -, measure –