0.28inch Mini Voltmeter LED Display DC2.5-30V Voltage Tester Panel (Green)

0.28inch Mini Digital Voltmeter LED Display DC2.5-30V Voltage Tester Panel Meter Voltmeter with Two Wires Electrical Tool Feature: 1. Range: 2.5-40V (red) 2.6-40V (yellow) 2.6-40V (green) 3.2-40V (blue). 2. With two wires, which is convenient and simple to wire, and it is easy to access the internal lines of vehicle / battery car / motorcycle. 3. It has the function of reverse connection protection, it will not be burned when the wire is connected reversely, and it has fine adjustment function. 4. Note that the maximum input voltage should not exceed 40V, otherwise there will be danger of burnout. 5. When the voltage is below 3.0V, the brightness of the display will darken, but it will not affect the correct measurement. 6. When measuring voltage below 10V, the two digit is displayed after the decimal point when measuring voltage above 10V, a digit is displayed after the decimal point. It not only meets the needs of battery users for measuring accuracy, but also meets the needs of measuring higher voltage. 7. The best measuring accuracy is that the voltmeter automatically moves the decimal point according to the voltage difference. 8. When measuring the voltage below 10V, the two digit is displayed after the decimal point. When measuring voltage greater than 10V, a digit is displayed after the decimal point. 9. This voltmeter can be used to measure the voltage of 18650 battery, mobile phone lithium battery, nickel-hydrogen battery and other battery packs, as well as motorcycles, automobiles and other batteries. It can also be used for other voltage measurement purposes. Specification: Working voltage: DC2.4-40V (with reverse connection protection function) Detection voltage: DC2.4-40V Working current: