The Klein Tools Advanced Circuit Tracer Kit is a professional tracer for energized and non-energized breakers, fuses, and wires. When the Transmitter is connected to a circuit, the Receiver’s sensitivity can easily be adjusted to detect the transmitted signal on breakers, fuses, and wire through drywall, cement block, and underground. Cable tester tests voice (RJ11/12), data (RJ45) and video
Measure cable length up to 2000 feet (610 m)
Auto Power-off feature to conserve battery life (9V included)
Backlit LCD screen displays cable length, wiremap, cable ID and test results