--Test of double-twisted cables: Switch on the power. (S is slow automatic grade, Mis manual.) Put cables into both main tester and remote tester. --The lights of the main tester will turn on sequently form 1 to G. --Main tester: 1-2-3-4-5-6-7-8-G. --Remote tester: 1-2-3-4-5-6-7-8-G RJ45, 1-2-3-4-5-..