4 In 1 Network Cable Tester RJ45/RJ11/USB/BNC LAN Cable Cat5 Cat6 Wire Tester Compatible with 4 different connector types: RJ11/RJ45/USB/BNC Detachable module for testing two remote points Terminator 25 Ohm 50 Ohm indications Straight or crossover indication Powered by 9V alkaline battery