Cable Tracer and Tone Generator Find and Locate Wires and Cables Circuit Tester RJ-11 Connector Network Cable Tester Function: Perfect for installation, debugging, maintenance of telephone lines and other wires or cables. It can trace cables or wires and diagnose the broken point. Receive the sound signal via cables or wires (telephone line). Sending a single continuous tone or an alternating double tone to the object cables or wires. Compatible with all major track audio sources. Identify the status of the telephone line in order (free, ringing, busy) Save time and be safe: With the sound signal, you can trace your cable quickly and you don't have to take the risk of not being accurate to know where your wires are. Color: Yellow. Material: ABS and Metal. With RJ11 connection, you can easily test telephone systems. This wire locator and circuit tester - featuring a transmitter or tone generator and a detector - is designed to identify and trace wires or cables without damaging the insulation. Note: Requires 2 x 9V batteries (not included) <b> Package Contents: < or b> 1 x Transmitter Cable 1 x Receiver Cable 1 x RJ11 Cable 1 x Crocodile Clip Cable 1 x User Manual (English) < p > Note: DO NOT connect to a live circuit. The probe can be used with live circuits, but under no circumstances should it touch a live wire. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.