Color: orange material: plastic 6. High quality protecive case provides more secure protection; 7. Judge continuity of the cables or wires; 8. Track the cables or wires, and diagnose the break point; 9. Receiver the tone signal on the cables or wires (telephone line); 10.Identify the state in the working telephone line (clear ring, busy); 11.Send a single solid tone or a dual alternating tone to the object cables or wires. Working current: Emiter: 10mA Receiver: 30mA Signal transfe mode: Digital signal Signal output level: 8Vp-p Signal transfer distance: 3Km Dimension:Transmitter: 126x49x34mm Reveiver:175x42x25mm Power: by 2 x DC 9V Battery Package Contents: 2 x Cable Emitter 2 x Cable Receiver 2 x RJ11 Cable 2 x RJ45 Cable 2 x Earphone 2 x Cable with Clamp 4 x Battery 2 x User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 2. Automatic efficient scan for the miss wiring, disorder cable, open and short circuit; 1. Cable Tester for UTP STP RJ45 RJ11; 5. Protective power switch for low power consumption; 4. Remotely test cable up to 1000 ft in length ( remote kit included ); 3. BNC test available(Adapter needed);