The UTP Cable Tester by Linkbasic allows you to inspect/test network cable wire by wire. It is designed for testing the RJ45/RJ12/Rj11 cables for the opens, shorts, reversals, mis-wiring and so on. The relative indicators on the main tester and the remote testing terminal will flash one by one in cycle to judge which wire is in the correct working connection, or in the incorrect order connection.