... superior performance For RJ45,RJ12,RJ11&BNC1.Functions:1.Can test correspondingly double-twisted cables 1,2,3,4, ... 5,6,7,8andG,meanwhile can judge wrong connection,short circuit and open circuit.2. ... tester.The lights of the main tester will turn on.Sequently from 1 to G.Main tester:1-2-3-4-5- ... patch panels or wall plate outlels,two cables which can match each other(eg110 P4 and RJ45)will be ...