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. Features: Directly hunt 5E, 6E, telephone wire, coaxial cable, USB cable and other cables. Check wiring error in 5E, 6E, coaxial cable, such as open circuit,short circuit, jumper wire, reverse connection. Locate the wiring or connection error. Measure cable length and determine the distance of open circuit and short circuit. Automatically time-delay shut off and backlight display function. Single board computer software watchdog design and reliable operation. Verify RJ45 and BNC conductors. TDC theory to measure length of cat5e, cat6. 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 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)