The Klein Tools ET310 Digital Circuit Breaker Finder makes it fast and easy to locate the correct breaker in your panel without guessing — simply plug the transmitter into the outlet and scan the panel with the receiver's bright LED display for a clear, accurate match. Built-in GFCI outlet testing lets you verify ground fault circuit interrupter protection is functioning correctly, adding a valuable safety check to every job.
Ideal for electricians, contractors, and savvy homeowners, this versatile tester streamlines both circuit identification and outlet safety verification in one compact, easy-to-use tool — reducing downtime and improving jobsite safety.