vehicle circuit test detector repair kit tools pen self diagnosis digital display voltage tester-pen power probe car diagnostic tool

digital display allows you to see the voltage more clearly.needle test head can be conveniently connected to the clamp. 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,