Tripp Lite's Multi-Functional Network Cable Tester allows you to test wiring continuity for Cat5, Cat6, Phone and Coax cable assemblies. Identifies mis-wires, short circuits and open circuits. Features two piece transmitter and receiver, two BNC-F coax converters and coax terminator. Includes handy storage pouch when not in use. Power supplied by 9V Battery (not included). Tripp Lite Lifetime Warranty.