• Extech CB20: Circuit Breaker Finder/Receptacle Tester


Quickly Locate Circuit Breakers, Confirm Proper Wiring and Test GFCI Circuits.

Locate the correct circuit breaker or fuse without turning off the power with the Extech CB20 Circuit Breaker Finder, which employs automatic sensitivity to quickly and accurately pinpoint the correct 90-Volt to 120 VAC circuit breaker or fuse. The CB20 is ideal for a range of applications, including locating branch circuit breakers without causing accidental power shutoffs, confirming proper wiring during electrical installation or repair, and testing receptacle ground fault operation. Complete with Receiver, Transmitter, and 9V battery.


Circuit Breaker Finder (Receiver):

  • Quickly locate Circuit Breakers and Fuses.
  • Microprocessor-based automatic sensitivity adjustment.
  • Audible and visual indication low battery indicator.
  • Ergonomic design.
For complete specs please download the product datasheet (not available for some accessories)
Thumb File Name File Size Action
CB20_UM.pdf 259.45KB
CB20data.pdf 523.67KB

Extech CB20: Circuit Breaker Finder/Receptacle Tester

  • Product Code: lc10377