... , camera gps vehicle tracker, vehicle tracking device, gps for car, gps for vehicle, car gps tracker, fleet tracking systemPreview: Four- ... open/close alarm sensorListen to the voice surrounding vehiclesInternal flash memory: for storing & re-send the location data when GPRS is ... platformGPS/GPRS Specification: SOS Button: Driver can press SOS button for emergency General: L1 1575.42MHz, C/A code, 20 ...