Network and Coaxial Cable Tester RJ45 RJ11 BNC

3-in-1 cable tester for RJ45 Ethernet, RJ11/RJ12 telephone, and BNC coaxial continuity. Sequential LED indicators help spot opens, shorts, and wiring faults during install and after-sales service. Specs focus: RJ45/RJ11/BNC, LED continuity and wiring check.