@vdiagtool.us: Easily locating the circuit breaker point, open connections, broken wires, current leaks with tone change, even trace wire/cable without damaging the insulation. This is a convenient and efficient circuit instrument for DIYers, electricians, and technicians, to simply and quickly judge the continuity of the cables/wire and diagnose the breaker point. #creatorsearchinsights #circuittester #cabletracker #carrepair #breakerfinder