Klein Tools ET310 Digital Circuit Breaker Finder With GFCI Outlet Tester admin GFCI Outlet Tester integrated in receiver. Circuit Breaker Finder locates the correct breaker in a panel. Digital Circuit Breaker Finder. Tester consists of two parts: a Transmitter and a Receiver.GiMiTEC.infoAAS, Column, consumable, GC, GiMiTEC, HPLC, spare part 25 September, 2020