Application Field:  
   1. Support 3-frequency GSM 900/1800/1900 MHZ. Fleeting management
      Acquire the location and trace of every vehicle anytime.Send command to drivers of any vehicle.
   2.  In vehicle security,anti-theft
      Dial up the default telephone number,setted by owner such as police,when the
      vehicle is in danger such as being rob.
Main Features:
   1.  Acquire the location of vehicle and tracking vehicle real time.
      The location of vehicle sent to mobile or control center once per second.
   2.  Record the trace of vehicle.The trace of vehicle can be recorded
      to memory stick.
   3.  Realtime communication with any telephone.
   4.  Emgergency alert.ASK help when in risk such as in ciolence.
   5.  Remote control by owner.Authorized owner can control vehicle by send messages  to terminal.
      Following messages is supported:shut down power,close door,close windows,etc
   6.  Self cheecking.Checking states of terminal,such as GPS antenna connectivity,etc..