Klein Tools ET310 AC Circuit Breaker Finder

Electric & Voltage Tester with Integrated GFCI Outlet Tester

Quickly and accurately locate the correct circuit breaker with the Klein Tools ET310 – a professional-grade AC Circuit Breaker Finder designed for electricians, technicians, and DIYers. This compact tool helps identify the correct breaker controlling a specific outlet, minimizing guesswork and improving safety on the job.

Key Features:

  • ✅ Accurate Circuit Breaker Detection – Instantly identifies the correct breaker linked to any 120V standard outlet
  • 🔌 Integrated GFCI Tester – Tests GFCI outlets for proper wiring and functionality
  • 🔍 Simple Operation – Just plug in the transmitter, scan the panel with the receiver, and listen for the clear audio/visual cue
  • 🧰 Durable & Portable – Compact design with rugged Klein Tools reliability
  • ⚡ For 90–120V AC Circuits – Ideal for residential and light commercial applications

Includes:

  • 1x Transmitter (plugs into outlet)
  • 1x Receiver (scans breakers)
  • Batteries included for out-of-the-box use

Whether you’re updating wiring, replacing outlets, or troubleshooting electrical issues, the Klein Tools ET310 is a must-have for safe and efficient work.