0.28 Inch 2.5V 40V Mini Digital Voltmeter Voltage Tester Meter LED Screen Electronic

The voltage meter is small, the range DC DC0-100V, 2-wire and 3-wire products are common, breaking the conventional voltmeter, is the latest design, can work directly in the 5V, 9V, 12V, 24V and other circuits, no regulator. Equipped with three wiring, easy access to the car / battery car / motorcycle car lines, with reverse protection function, the line will not burn. Used to monitor the battery voltage, to grasp the battery voltage status, can also be used for other products voltage measurement purposes. Note that the maximum input voltage of 2 lines can not exceed 30V, otherwise there is the risk of burning.

Note: three-wire voltage range of 0-100V, but also for second-use use, but the voltage to 40V

Technical Parameters
1. 2wireOperating voltage: 4.0 ~ 40V (with reverse protection function)
2. 3wireOperating voltage: 4.0 ~ 40V (with reverse protection function)
3. Operating current: <20mA
4. Display mode: 0.28 "LED, red blue green yellow (color optional)
5. Dimensions: 30 ? 11.7 ? 9.2 mm (long ? wide ? high)
6. Installation opening: 23 ? 10 mm
7. Measurement rate: ?200mS / times
8. Measurement accuracy: 3 ?
9. Extreme working conditions
10. Low operating voltage: + 4.0V
11. Maximum operating voltage: + 40V
12. Operating temperature: -10 ~ +65 degrees Celsius
13. Working humidity: 10 ~ 80% (no condensation)
14. Working pressure: 80 ~ 106kPa
15. Sun exposure: no direct exposure

Main feature:

1. Product stability is good, high precision test
2. The appearance of the standard size, easy installation
3. Power supply using polarity protection circuit