Check the listing for details. Cable Wire Tracker Network RJ11 Phone Line Tracer Tester Kit Tone. Condition: New. Listed at 24.95 USD. Description : This Cable Tracker is designed to identify and trace wires or cables within a group without damaging the insulation. For telephone line, it can identify some states in the line. With this instrument install, debug, and maintain telephone line is more convenient. A Sender and Receiver is included in the Cable Tracker. Application:Testing polarity of phone linesTracing a wireFinding wires buried behind drywallTest whether a cable is interruptedFind interrupts in cable FEATURES:Compatible with all common tracing tone sourcesJudge continuity of the cables or wiresTrack the cables or wires, and diagnose the break point.Receive the tone signal on the cables or wires (telephone line)Identify the state in the working telephone line (clear, ring, busy)Send a single solid tone or dual alternating tone to the object cables or wires SPECIFICATIONS:Receiver:3.5 mm earphone jackTest buttonOn/Off buttonSender:Tone/Cont (Continuity) LEDsTone/Off/Cont (Continuity) switchBuilt-in RJ-11 telephone cable (47cm length, approximate)Red and black test leads cable (61cm length, approximate)Receiver Dimensions: 23 x 4 x 2.3cm (H x W x D, approximate)Sender Dimensions: 6.5 x 5.6 x 2.1cm (H x W x D, approximate)Power : 9V battery (6F22) SET COMPRISE:1 x Cable Tracker Sender1 x Cable Tracker Receiver2 x 9V Battery1 x Carrying PouchEnglish User Manual