... with voive Easily used,convenient 1.Telephone line tester with voice,can Test RJ45 and RJ11 network cables 2.Test correspondingly double ... , 5, 6, 7, 8 and Ground 3.Test RJ45 and RJ11 network cables4.Test correspondingly double-twisted cables 1, 2, 3 ... : DC 9V batteryUpdate Date:2011-3-30 1:12:31 telephone line tester with voice HOT!!!