Telephone Phone RJ Cable Wire Line Tone Generator Probe Tracer Tracker Tester£» Description£º The 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 state in the line,and more Convenient to install,debug,maintain telephone line.There are a sender and a receiver included in the cable tracker. Features: 1. Judge continuity of the cables or wires 2. Track the cables or wires, and diagnose the break point of the cable 3. Receive the audio signal of the cables (telephone line) 4. Judge the state of the working telephone line (clear, ring, busy) 5. Send a single audio signal or a dual audio signal to the target cable Audio signal: 1.5KHZ Receive frequency range: 100-300KHZ Powered by 2 x 9V (6F22) batteries (Not included) Receiver dimension: about 238x43x26mm. Emitter dimension: about 145x35x25mm. Including a Sender MS6812-T and a Receiver MS6812-R With RJ11 connector cable on the Sender for plugging into the telephone line jack to be tested. With 2 Alligator clips (Cable length: about 70cm) for clip on the cable to be tested directly. NOTE: The line to be tested must not be in a state to be electric, or the signal interference will affect the detection results. Package Content£º 1 x Receiver 1 x Sender 1 x English user guide