"GARDNER" WIRE TRACKEREnergized Wire & Cable Tone Tracer For Non-Energized Wire 4 Types Of Transmitter Plugs Encased In The Sending Unit Enables The Detection & Tracing Of Line Voltage Circuits Telephone Circuits, Data LANs, Coaxial Cable & Automotive Circuits Detects Wire Up To 12" Away Self Storing & Self Contained Adjustable Sensitivity Warbling Tone Auto Off Feature Rubber Housing On Receiver Belt Clip Clamshell.