1,Network Cable Tester for UTP STP RJ45,RJ11,RJ12 2,UL ... to judge wrong connection, short circuit and open circuit 5, Cable Tester for RJ11, RJ12, RJ45, Cat 5e, Cat 5, ... etc.6, It can easily clarify cable, continuity, open and short. 7, Verifying Cable continuity, open, short and cross wire ... ( Not Included ) Package Content:1, 1 x LAN Network/Phone Cable Tester RJ11 RJ12 RJ45 Cat5 2, 1 x English Manual ...