1. Measure network cable length and determine the distance of breakage point.
2. Check wiring error in 5E, 6E, coaxial cable, such as open circuit,short circuit, jumper wire, reverse connection .
3. Portable unit with long battery life (wait-case 50 hours).
4. Automatically time-delay shut off.
5. Self-checking and automatically compensate any change in battery capacity or ambient temperature.
6. With 8 remote identifiers , more easy to work.