UT25A AC Circuit Tester - Fast, accurate circuit identification: quickly determine the correct circuit breaker or fuse that protects a specific circuit. Visual flashing light and audible beeping confirm when the correct breaker is identified. - Adjustable sensitivity with clear status: sensitivity is adjustable via the ON/OFF switch. Three LEDs indicate the circuit connection status to guide operation. - Two-part design for easy testing: a Transmitter and a Receiver. The Transmitter connects to an outlet or fixture (110-125V) and supports GFCI testing on sockets; the Receiver scans the panel to locate the matching breaker. - Wide applicability and reliable performance: suitable for house, office, and factory power network work. Built for stable performance and accurate testing. - Practical use scenarios: - Identify which breaker protects a newly installed outlet or appliance. - Verify GFCI protection on a socket using the transmitter. - Locate the correct breaker during panel labeling, rewiring, or power restoration. - Maintains the original brand and function: UT25A is designed for quick, dependable circuit identification with simple, user-friendly operation.