ELECOM Remote Cable Tester LD-RCTEST3

This is a compact, remote-controlled cable tester. Because the main unit and remote unit are detachable, you can easily test cables that have already been laid. Its pen-type design makes it very convenient to carry in a bag or clothing pocket. Simple operation: just plug LAN cables into both ends. The indicator lights show whether the cable is straight or crossover, and indicate the connection status of cables 1 through 8. Features include crossover cable, reverse connection check function, and STP/UTP cable identification function. I will find a wiring error with the LAN cable.