Plug the UL-listed transmitter into an outlet on the circuit you want to locate...up to 280 volts. Also works with the screw-in plug adapter for light fixtures. Go downstairs and run the receiver's tip over the breakers or fuse rows until the arrow illuminates and the speaker beeps. That's the breaker or fuse you want. Won't trigger ground fault interrupters. Manual/automatic off.

Features

• 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
• 90-288VAC Operation
• Lifetime-Limited warranty