Simply plug the Circuit Detective’s transmitter into a wall outlet on the circuit you’re trying to locate, then run the receiver over the circuit breakers or fuses in your box. When the receiver beeps and flashes, you've located the right circuit. Receiver operates on one 9v battery. UL listed.

• Identify AC circuit breakers, fuses, & power outlets
• Fully Automatic
• Digital calibration for faster, easier, more reliable identification
• Flashing arrow indicator for easier identification
• Smart switch with auto-off, easier operation. and longer battery life
  90-120VAC Operation
• Lifetime-Limited warranty