Description Automatically runs all tests and checks for open, short, and crossover wire pairs. Visible status LED display. Cable Health Tests (2-wire): DC line detection, anode and cathode detection, ring signal detection open, short circuit and cross tests. Cable type: RJ11 telephone cable and RJ45 LAN cable. Connectors: Ethernet Cat 5, Ethernet Cat 5e, Ethernet Cat 6, Ethernet Cat 7, RJ11 6P and RJ45 8P. Power supply: 9V DC battery Show More Show Less