1 ·Non contact testing, compact, portable, with pen clip
2 ·Matte finish, double injection molding, suitable for testing output ports or insulated wires
3 ·All external insulation of the instrument ensures safety
4 ·Built in flashing light with switch button, flashing red light prompt
5 ·apply to50/60Hzcircuit
6 ·Easy to operate: simply touch the pen tip to the socket type wire, and the red light will light up to indicate that there is voltage on the line. Detecting voltage does not require metal contact and can be attached to a shirt pocket