Nf-468b Network Lan Cable Wire Tester Rj45 Rj11 Rj12 BNC Cat5 Tracker Wire Cable Tracer It can test corresponding double -twisted cable 1, 2, 3, 4, 5, 6, 7, 9, and G Cable assignment test: Open, short and cross of LAN cable, two-wire (RJ11)/four-wire (RJ46) Cable type testing: RJ45,RJ11 and BNC Cable state testing (2-wire): Line DC detecting, anode and cathode determination Continuity test with low battery indication and with bright white LED flash light. "OFF" means Power