Remote cable tester RJ-45, RJ-11, USB-A-B, BNC. Can test RJ-11 / RJ-45 / USB a-b and BNC cables. Fast speed in testing. Terminator 25 ohms / 50 ohms indications. Strainght or crossover indication. Battery good or battery low indication. Can test from 2 remote points. 9V Alkaline battery powered. Palm size with carrying bag.