This tester is a multi-functional wire tracker, including cable emitter and receiver. It has functions like telephone wire tracking, network wire tracking, power cable tracking, network wire check, etc. and it produces fast and accurate measurements. It is a necessary testing tool for telecommunication engineering, wiring engineering and network maintenance person. Features: Can test telephone wire, network wire, coaxil cable. LCD display with backlight for easy reading. With PING & POE testing and calibration functions. Portflash function for locating network port on Hub or Switch. Includes 8pcs remote adapters, high working efficiency. Equipped with RJ11 and RJ45 cables and with interface on the transmitter. Network wire checking function to judge normal/short-circuit/open-circuit/crossing. Easy and fast to locate the breakpoint without opening the wire's cover. 160 groups of data records storage and data transmission function. Low battery indication and auto power off function. Specifications: Material: ABS Display: LCD Input: AC110-220V, 1Hz Output: 5V Working Temperature: 0～50℃ Storage Temperature: -10～50℃ Accuracy: 3%(after calibration) Compatible Connectors: RJ11, RJ45, BNC Signal Transmission: Multifrequency Pulse Short Circuit/Open Circuit Detection: Yes Max. Distance of Wiremap: 2000m Max. Distance of Tracing: 2000m Max. Distance of Cable Length: 1000m Min. Distance of Calibration: 10m Built-in Lithium Battery: Emitter: 1 * 3.7V 1800mAh; Receiver: 1 * 3.7V 1800mAh Emitter Size: Approx. 17 * 8.5 * 2.7cm / 6.7 * 3.3 * 1.1in Receiver Size: Approx. 18 * 5.5 * 2.3cm / 7.1 * 2.2 * 0.9in Emitter Weight: Approx. 204g / 7.2oz Receiver Weight: Approx. 121g / 4.3oz Package Size: Approx. 27.2 * 20 * 9.3cm / 10.7 * 7.9 * 3.7in Package Weight: Approx. 1073g / 37.8oz Packing List: 1 * Emitter 1 * Receiver 1 * RJ11 Cable 1 * RJ45 Cable 1 * Crocodile Clip Test Line 8 * Remote Adapters 1 * USB Cable 1 * Carry Bag 1 * User Manual (English)