Optimal Shop 4 in 1 Network Cable Tester RJ45/RJ11/USB/BNC LAN Cable Cat5 Cat6 Wire Tester 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. RJ-11/RJ-45 are equipped with 50u gold plating. 300 feet test distance (RJ-45/RJ-11/BNC). Ergonomic portable handheld design. Powered by a 9V Alkaline battery. (Not included) Convenient battery access. Low Battery Indicator. Simple one button test. Fast speed testing. High quality warranted.