1,Network Cable Tester for UTP STP RJ45,RJ11,RJ12 2, ... to judge wrong connection, short circuit and open circuit 5, Cable Tester for RJ11, RJ12, RJ45, Cat 5e, Cat 5 ... It can easily clarify cable, continuity, open and short. 7, Verifying Cable continuity, open, short and cross wire pair up to ... Included ) Package Content:1, 1 x LAN Network/Phone Cable Tester RJ11 RJ12 RJ45 Cat5 2, 1 x English Manual ...