Klein ET310 Circuit Breaker Finder

Stop guessing breakers and start working smarter with the Klein ET310 ⚡🧰. This two-part system uses a plug-in transmitter and a scanning receiver to quickly identify the exact circuit breaker connected to an outlet or fixture. Clear visual and audible alerts guide you straight to the right switch in seconds. The built-in GFCI outlet tester adds extra safety by checking wiring conditions at the source. Compact, accurate, and trusted by electricians, it saves time, prevents mistakes, and makes electrical work far less frustrating for DIYers and professionals alike.