Gardner Bender GET-4110K Wire-Tracker, Wire Tracer An ideal tracer for finding phone lines, coax lines, automotive wires, and unenergized electrical wires Detects unshielded wires up to 12-inches when using a ground clip Transmitter generates a distinct tone in an unenergized wire or cable for ease of use Easy-to-see LED identification system 1-year limited manufacturer's warranty