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. 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 #xff5e;1000m Calibration precision: 3%(0.5m or 1.5feet); (calibration cable gt;10m) Measurement Precision: 5%(0.5m or 1.5feet); (AMP, AT T Class 5 cable) Display Unit: Meter and Foot Working Temperature: -10 #xff5e; #43;60 Working Humidity: 20% #xff5e;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)