Docooler Remote RJ11 RJ45 USB BNC LAN Network Phone Cable Tester Meter Test 4 types of cables: RJ-45, RJ-11, USB and BNC.Test installed wiring or patch cables. Tests shielded (STP) or unshielded (UTP) LAN cables.Test shields in USB cables. Can test from 2 remote points.Beeper provides audible annunciation of test results. Remote unit stores in Main unit.BNC terminator 25/50 Ohm indications. Straight or crossover indications.LEDs indicate connections and faults of wire and pins.