This network cable tester can measure the cable length and the breakpoint. It is a necessary testing tool for telecommunication engineering, wiring engineering and network maintenance person. Specifications: Material: ABS Display: LCD Cable Types: STP/UTP 5E, 6E network cable, telephone cable, coaxial cable, USB cable and other metal wires. Tester Port: Master:RJ45 main port,Port Flash,RJ45 Scan,RJ11 Scan,USB Scan,BNC port and power port. Remote Identifier:RH45 port(R),BNC Port. Receiver:Earphone port. Measuring range:1~350M(3~1148ft) Calibration accuracy:2%(0.5m or 1.5ft);(calibration cable>10m) Measuring accuracy:5%(0.5m or 1.5ft); (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 Package Weight: Approx. 580g / 20.46oz 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)