Two kinds of applications, one for measuring circuit electrical pen and the other for screwdriver; Two types of screwdriver tips on the both end of metal rod-slotted and cross-recess; When you pull out the metal rod, please insert the rod to the deepest position to make full contact.
Voltage tester pen: For testing the circuit and distinguishing whether the object is electrified. Can be used as a screwdriver.
Voltage tester pen is designed for electricians. Automatically detects and indicates and standard voltage allowing broad application.
Designed for detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires; Also excellent for detection voltage in security, entertainment, communications, environmental control, and irrigation systems.