... , trucks, moving equipments, transportations, etc.1.Product Packing List:2.How to install SIM CARD:This tracker is suit for 12V and 24V ... the tracker.3.How to powen on/off:3.1)Switching the power switch on one side of the main box to “ON” position will power ... , and check the instruction & password is right or not.8.6)When call the tracker, it has ringing, but it will ...