6. Measure network cable length and determine the distance of breakage point.
7. Check wiring error in 5E, 6E, coaxial cable, such as open circuit,short circuit, jumper wire, reverse connection .
8. Portable unit with long battery life (wait-case 50 hours).
9. 8 remote units with ID 1- ID 8, capable of indentifying cable.
10. Automatically time-delay shut off.
11. Self-checking and automatically compensate any change in battery capacity or ambient temperature.