The trip test to confirm that GFCI protection is working properly (ST‑102B only)
Easy‑to‑read lights indicate common wiring problems
Confirm proper wiring and operation of AC socket
For use on 110‑125 V AC
Easily check and confirm proper wiring of electrical receptacles with the Amprobe ST‑101B and ST‑102B Receptacle Testers. Quickly test sockets and confirm wiring and operation of AC outlets with the ST‑101B and confirm that GFCI breakers are properly wired for protection with the ST‑102B.