... /RJ12/RJ11 2.Easily used,convenient Network Cable Tester ,For RJ45/RJ12/RJ11 1.Cable network tester can Test RJ45 and RJ11 ... network cables 2.Test correspondingly double-twisted cables ... , 5, 6, 7, 8 and Ground3.Test RJ45 and RJ11 network cables4.Test correspondingly double-twisted cables 1, 2, 3, 4 ...