Telephone Plug RJ12 PLUG,Cable Connector(4P4C)1.application:telephone cable communications 2.type:telecom parts VL 94 V-2 contact ... RMS .50HZ or 60HZ 1mininsulation resistance:39 millions max mechanical cable to plug tensile strength:7.7kg mindurability: 750 mating cycles ... ,30u,50u,60u. Working temperature :4060 Telephone Plug RJ12 PLUG,Cable Connector(4P4C)