Applications 1. Global positioning 2. Real-time monitoring 3. Vehicle locating 4. Timing tracking 5. Cutting off power and circuit by romote control 6. Vehicle rental / Fleet management etc It is an idea design not only for GPS real time tracking,but also a complete GSM alarm controllable by user's mobile phone message as well as the RF transmitters . The use can control the system with mobile(arm,disarm,lock, unlock,start and stop the engine of car,listen in, check status and speak to the car, cut off the power ) in real time , the user also can check the position of system on PDA and E-map with the message from system .