High-Quality ST120 GFCI Socket Tester Without Beeper, Great Socket Tester for Wire Examination

Easy to operate: Plug into socket with the bright can make you easy to see LEDs, verifying correct wiring or identify common wiring problems in both standard and GFCI outlets.

You can know more about the situation of electricity usage with the handy chart, and you may quickly identify one of six wiring conditions for the outlet

GFCI outlets Accesory: Being Equipped with an integrated GFCI test make you feel secure that your GFCI equipped outlets are functioning properly.