Product reference sheet

The Klein Tools ET310 Circuit Breaker Finder with Integrated GFCI Outlet Tester is a digital circuit breaker finder used to locate the correct circuit breaker in a panel to which an electrical outlet or fixture is connected. The Transmitter is connected to the electrical outlet or fixture in the circuit while the receiver is used to scan the breakers in the circuit panel. The Transmitter also features a GFCI outlet tester.



This circuit breaker finder can quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical outlet or fixture is connected


GFCI tester consists of two parts: a Transmitter connected to the electrical outlet or fixture, and a Receiver used to scan the panel to locate the correct breaker


Receiver delivers clear visual and audible indications when the correct breaker has been located


Operates on 90-120V AC circuits


Transmitter incorporates a GFCI outlet tester to inspect the wiring condition at the electrical outlet and test GFCI devices


Transmitter docks in the Receiver for convenient storage as a single item when tester is not is use


Transmitter incorporates a three-pin plug for connecting to North-American-style grounded electrical outlets


The transmitter may be connected to other electrical fixtures using optional accessories which are sold separately (Cat No 69411)


Receiver powers off automatically after approximately three minutes of non-use to conserve battery life