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)