KLEIN ET310 Digital Circuit Breaker Finder with GFCI Outlet Tester

The Klein Tools ET310 is a digital circuit breaker finder designed for quickly and accurately locating the correct circuit breaker in a panel corresponding to any standard 120V electrical outlet or fixture. It is ideal for electrical distributors, lighting solutions providers, wire and cable specialists, and switchgear suppliers requiring precise circuit identification without interrupting service. The unit operates on 90 to 120V AC circuits and includes an integrated GFCI outlet tester to verify wiring conditions and test GFCI devices at the outlet.

Specifications

• Operating Voltage: 90 to 120V AC, 50/60Hz
• Dimensions (Transmitter docked in Receiver): 10.96" x 2.16" x 1.39" (278 x 55 x 35 mm)
• Weight (Transmitter, Receiver, and Batteries): 7.2 oz (204 g)
• Battery (Receiver): 1 x 9V Alkaline (included)
• Auto-Power Off (Receiver): After 3 minutes of inactivity
• Drop Protection: 6.6 ft (2 m)
• Ingress Protection: IP40 dust resistant
• Standards: UL STD 61010-1, 61010-2-030; CSA STD C22.2 # 61010-1, 61010-2-030

Features

• Transmitter connects to electrical outlet or fixture to identify corresponding circuit breaker
• Receiver provides clear visual (green arrow and red circuit status indicator) and audible signals when correct breaker is found
• Integrated GFCI outlet tester inspects wiring condition and tests GFCI devices
• Transmitter powered by the circuit; receiver powered by 9V battery (included)
• Transmitter docks into receiver for compact storage
• Operates on 90 to 120V AC circuits without interrupting service
• Compatible with optional accessories for testing light fixtures and bare wires (sold separately)
• Built to withstand a 6.6 ft (2 m) drop for jobsite durability

Downloads & Links

• Spec Sheet
• Spec Sheet