One of the most advanced of all wire tracers, the Amprobe AT-4004-A wire tracer has all the features of the AT-4003-A, plus a clamp-on attachment to inject a signal without making contact with bare wire.
Our best wire tracer, use this electrical wire tracer for finding wires in walls and locating breakers without interrupting power. You can also use it to find energized and de-energized wires, including broken and disconnected wires, and pinpoint shorts and ground faults.
Receiver is indicating on all wires in house with transmitter off.
Working on a red tagged home with no power. Tried to find where some wires were going to. Receiver indicating on every outlet and switch. EVEN WHEN THE TRANSMITTER WAS OFF!
✘ No, I do not recommend this product