... STP RJ45, BNC 2, UL,CE,RoHS certificate Specification:1, Cable tester for Cat 5 and BNC!2, 2pcs transmitter/receiver design ... to test installed cabling or patch cables!3, Standard cable wiring diagrams printed right on the transmitter unit!4, Transmitter ... and receiver snap together for transport or patch cable testing!5, Extremely easy to use and understand!6, Transmitter ...