Car Vehicle GPRS GSM SMS GPS Tracker Tracking System Device TK103A With Alarm Suitable for cars, vans, trucks, bikes, etc. You this Purcnase is Real Time GPS Vahicle Tracker Drive Include Free Use Latest GPS Tracker Software. No Contract, No Activation Fee, No Software use Fee. Can Remote control car power and oil More safety and convenience, by (running on a personal computer) remote control software can cut off the vehicle oil and the circuitalso can be connections the original vehicle are vibration sensors and automotive door control switch. It is working based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or internet. Please visit my store to buy it now. Applications: Global positioning Real-time monitoring Vehicle locating Timing tracking Cutting off power and oli by remote control Vehicle rental / Fleet management etc HOW IT WORKS Simply insert a GSM sim card into the GPS unit. Whenever you call the unit it will respond with the coordinates of its location thru a SMS message. You can then use these coordinates on any mapping software (for example google earth) which will show where exactly the unit is located. With some little setup, you can also have the device to send the data directly to a computer thru GPRS and display its location on a map with our bundled software for real-time location tracking. Of course, you can control your vehicle through our software.