The Amprobe Wire Tracer Kit includes everything in the kit plus a signal clamp attachment (SC-400) for inducing a signal in wires without access to exposed conductors. The kit includes the AT-8000-R Receiver and the AT-8000-T Transmitter. The Receivers patented Smart Sensor feature instantly displays the location and orientation of energized wires in walls, floors, and ceilings. You can clearly see the wires direction on the large, bright TFT LCD full color display. In hard-to-reach areas, you can use the Receivers Tip Sensor to trace wires in corners, tight spaces and junction boxes. The Transmitter offers two, automatically-selected frequency modes for optimal tracing on energized and de-energized circuits, and three power modes (high, low, clamp) for a variety of environments. The breaker modes Scan and Locate feature identifies the one correct breaker or fuse with the highest recorded signal, thus eliminating the confusion of multiple false positives common with older technology tracing tools. This Amprobe circuit tracer kit has everything you need to get the job done fast.