... 1, 2, 3, 4, 5, 6, 7, 8 and Ground 3.Test RJ45 and RJ11 network cables4.Test correspondingly double-twisted cables 1 ... , 2, 3, 4, 5, 6, 7, 8 and Ground5.Can judge wrong connection, short circuit adm open circuit6 ... .Put cables into both main tester and remote tester. The lights of the main tester will turn ...