This Non-Contact Test Pen is a voltage tester that automatically detects low voltage and standard voltage. A bright green LED will tell you the tester is working and also functions as a work light. The light flashes red and two distinct warning tones sound when either low or standard voltage is detected.
SAFE TO USE: The Non-Contact Test Pen detects voltage in a non-contact way, so do not worry about there could be any possibility of being shocked by the electricity.
HIGH EFFICIENCY: As long as the voltage is detected, the LED light in the voltage tester pen will shine.
MULTIFUNCTION: The Non-Contact Test Pen is able to use in circuit, switches, outlets, wires and so much more.
CONVENIENT TO CARRY: The size of the non-contact test pen is small and the design includes a pen clip so that users are able to clip it on pocket or shirt to carry around.