Circuit Breaker Tester

The Klein Tools ET310 is a digital circuit breaker finder designed to quickly locate the correct circuit breaker in an electrical panel that corresponds to a specific outlet or fixture. This two-component tool eliminates the need for trial-and-error testing by using a transmitter that plugs into an outlet and a receiver that scans the breaker panel, with visual LEDs and audible tones confirming the correct breaker instantly.

The ET310 also incorporates an integrated GFCI outlet tester in the transmitter, allowing you to inspect wiring conditions at electrical outlets and test GFCI devices without needing a separate tool. Whether you're an electrician troubleshooting circuits, a homeowner identifying which breaker controls a room, or a maintenance professional managing electrical systems, this finder saves time and reduces guesswork.

Features and Benefits

• Dual-Function Tool: Combines circuit breaker finder and GFCI outlet tester in one system, eliminating the need for multiple tools.
• Instant Visual and Audible Feedback: LEDs and audible tones confirm breaker identification immediately, making it easy to match outlets to breakers.
• Two-Component Design: Transmitter connects to the electrical outlet or fixture in the circuit while the receiver scans breakers in the panel.
• Organized Storage: Transmitter docks into the receiver, keeping both components together and protected.
• Integrated GFCI Tester: Test GFCI outlet functionality and inspect wiring condition at electrical receptacles.

Specifications

• Brand: Klein Tools
• Model: ET310
• Operating Voltage: 90–120V AC
• Components: Transmitter with integrated GFCI outlet tester and receiver scanner
• Feedback: Visual LEDs and audible tones