Features:  Measure network cable length and determine the distance of open circuit, jumper wire, reverse connection.  LCD display with backlight for easy reading in low light conditions.  Includes 1pcs remote adapter, high working efficiency.  Network wire checking function to judge normal/short-circuit/open-circuit.    Easy and fast to locate the breakpoint without opening the wire's cover.  Low battery indication and auto power off function.  With 3 main functions of wire hunting, wire souring, and circuit status testing.  Comes With Earphone: great for using in noisy environment or private search in crowded places to avoid interference.  Wide Application: necessary testing tool for telecommunication engineering, internet bar, network maintenance, etc.    Specifications:  Material: ABS  Display: LCD  Cable Types: STP/UTP 5E, 6E network cable, telephone cable, coaxial cable, USB cable.  Tester Port: Tester RJ45 master port(M), tester LOOPBACK RJ45 port(L), RJ45 Scan(RJ45 cable tracing), Remote identifier: RJ45 port(R); The extra BNC and RJ11 converters are used to measure and check the continuity of coaxial cable and telephone line.  Range: 1～1000m  Calibration precision: 3%(±0.5m or ±1.5feet); (calibration cable>10m)  Measurement Precision: 5%(±0.5m or ±1.5feet); (AMP, AT & T Class 5 cable)  Display Unit: Meter and Foot  Working Temperature: -10～+60℃  Working Humidity: 20%～70%  Battery(Not Included): Emitter: 1 * 6F22/9V battery, Receiver: 1 * 6F22/9V battery  Emitter Size: Approx. 17.5 * 8 * 4.3cm / 6.89 * 3.15 * 1.69in  Receiver Size: Approx. 21.8 * 4.6 * 2.9cm / 8.58 * 1.81 * 1.14in  Adapter Size: Approx. 8.6 * 3.4 * 2.6cm / 3.39 * 1.34 * 1.02in  Emitter Weight: Approx. 223g / 7.88oz    Receiver Weight: Approx. 92g / 2.3.25oz  Adapter Weight: Approx. 34g / 1.22oz  Package Weight: Approx. 562g / 19.84oz  Package Size: Approx. 27.2 * 13.5 * 8.2cm / 10.7 * 7.9 * 3.7in    Package List:  1 * Emitter  1 * Receiver  1 * RJ11 Cable  1 * RJ45 Cable  1 * Crocodile Clip Test Line  1 * Remote Adapter  1 * Pair of Earphone  1 * Carry Bag  1 * User Manual (English)