The ST101 Socket Tester confirms proper wiring of 110-125 V AC sockets. The display of the ST101 socket tester uses easy-to-read light indicators for wiring results.
The ST102 GFCI socket tester is for 110-125 V AC GFCI breakers. The ST102 tests for proper wiring and operation. Easy-to-read light indicators show any wiring problem. The GFCI circuit trips to confirm tester is working.
