0.28 inch small digital display DC voltage meter head two-wire DC2.5-40V adjustable reversal connection protection

0.28-inch ultra-small digital display DC voltage meter head two-wire DC2.5-40V adjustable reversal connection protection

Two wires, convenient and simple wiring, convenient access to car/battery car/motorcycle car line, with reversal connection protection function, wire connection will not be burned, with fine-tuning function;

Function Introduction:

1. Range: 2.5-40V (red)  2.6-40V (yellow)2.6-40V (green)  3.2-40V (blue) 

2. Equipped with two wires, the wiring is convenient and simple, and it is convenient to access the car/battery car/motorcycle car line;

3. It has the function of reversal connection protection, the wire connection will not be burned, and it has the function of fine adjustment;

4. Pay attention to the use of input voltage can not exceed 40V, otherwise there is a danger of burning.

5. When the voltage is lower than 3.0V, the display brightness will darken, but it will not affect the correct measurement

6. When measuring the voltage below 10V, two digits are displayed after the decimal point; When measuring the voltage above 10V, one digit is displayed after the decimal point. That is to take care of the battery user's need for measurement accuracy, but also to take care of the need to measure higher voltage.