Features: GPS & GSM vehicle Tracker is a vehicle tracking device with built-in GPS and GSM modules with compact size. It can transmit the longitude and latitude coordinate to your cell phone by the short message service, then you can find its location on the free Google maps or any other map software. After easy installation and insertion of a sim card into the GPS & GSM Tracker, you can SMS the device from your mobile phone and the Tracker will send back co-ordinates of your vehicles position in real time. This information can then be entered into Google Earth or similar computer program which will then give you the location of your vehicle. It can be connected with your car alarm system. Provide three sensors trigger signal input to upgrade your original Car Alarm system (like shocking sensor, moving detecting trigger, Urgent help trigger, ACC Trigger and Door Trigger), for example: when someone open your car door, the system will send a message to warn you. SMS command to Cut-off engine Send it to GSM&GPS device Phone number to cut off the engine of the running car. SMS command to cancel Cut-off engine Send it to GSM&GPS device to cancel the engine cut-off. The device will reply "OK! +GEO INFO" to confirm the command has been successfully processed. SMS command to locate the car via GPS Send it to GSM&GPS device to acquire GPS information. SMS command to check the 3 preset mobile phone numbers Send it to GSM&GPS device to check the preset mobile numbers. Coordinates-saving The device will automatically send the latest available GPS information to the preset number A when it enters into the area without GPS signal. With any location inquiry SMS sent during the period without GPS signal, the device will resend GPS information to mobile A soonest as the GPS signal is covered. SMS command to set up GEO-FENCE Set up a geo-fence for the device to restrict its movement within a district. The device will send the message to the authorized numbers as "Stockade +geo info” when it breaches the district. SMS command to set up overspeed alert Suppose the alert-speed is 200km/h, when the vehicle moves exceeds 200km/h, the device will send SMS as "Overspeed! +GEO INFO” to the authorized numbers. Content Specs. Mainframe Dimension 106mm X 22mm X 63mm Weight 700g GSM Frequencies 900/1800/1900Mhz GPS chip uNav chip GPS sensitivity -154dBm GPS accuracy 5-10m Time to First Fix Cold status 60s Warm status 40s Hot status 1s Input Voltage 6-30V DC Battery Chargeable 3.7V 850mAh Standby 24 hours Static Current ≤50mAh Storage Temperature -40°C to +85°C Operation Temperature -20°C to +55°C Humidity 5%-95% non-condensing