GPS-100 is mainly focusing on help individual users making their car equipped with Car Alarm function which is controlled via mobible phones SMS and GPS Tracking service without third party help. When the alarm is triggered off, the system will send SMS to authorized mobile phone for alerting. Upon the situation that the car is driving away by rubber or burglars, the car owner could stop the car running by cut off it's engine circuit and use our product to tracking it's position and provide a valuable information to the police department. Trigger situation Alert by SMS: -Vibrate alert -Door open alert -Enforced engine on alert -Circuit cut alert -Highjack alert -Vehicle geographic position inquiry SMS user-friendly command for Car controlling: -SMS Arm/Disarm -SMS Door Lock/Unlock -SMS Switch Vibration Sensor ON/Off -SMS Enforced Stop Car Engine/ Cancel Enforced Engine cut-off -SMS Inquiry Car Location -SMS setup alert Target phone numbers -Car Status SMS enquiry -GPS Status Enquiry -SMS Reset Pincode for system Remote Listening-in Monitoring function: It means the car owner could make a call to the system phone no. and after 3times of ringing, the system will switch on to listening-in state. By use the system included Microphone, you can hear the real voice and movements inside the car. Advantages: Offer both SMS alert and call alert in real time Vehicle geographic position located Backup battery support once normal battery cut off SMS stop car engine via mobile phone Possible for the end user to track the car location with Google Earth by GPS-100 SMS Report.