Designed to detect low-voltage circuit faults in transportation machinery. Indicator design is helpful to detect the positive and negative poles of the battery or circuit. Support short-circuit and open-circuit test, ignition system test,engine performance test, charging system test, automobile battery performance test, circuit polarity discrimination test. It can be used for cars, motorcycles, bulldozers, rollers, excavators and other transport aircraft maintenance operations. Voltage test range: 2.5-32V Display: Digital LCD Screen Colour:As Shown Material:ABS Package Contents: 1 x Auto repair special test pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. It is flexible and does not deform easily. Digital display allows you to see the voltage more clearly. and high quality It is easy to operate with the pen shape. Needle test can be conveniently connected to the clamp.