3. Display by big LCD, with clear wiremap. 2. Check wiring error in STP UTP 5E, 6E, coaxial cable, such as open circuit,short circuit, jumper wire, reverse connection. 4. Automatically time-delay shut off. 1. Measure network cable length to an end or broken point. 5. Length Calibration: User can set self-calibration factor by a given length cable (The length of calibrating cable needs to be more than 5M ), Weight: 0.65477291814 Pounds, Manufacturer: Tuidzljd