Connect the car alarm with your mobile phone so that you can control you car without limit of time and space. Features 1. Original American voice reminder 2. Enquire the status of your car from telephone & mobile 3. No distance limit to control your car 4. Completely automatic operation 5. Remote open/close car doors 6. Remote arm/disarm the car 7. Remote monitoring/talking 8. Remote police alert/oil cut-off/power off /voice frightening 9. Remote stop car to preventing robbery 10.Hidden emergency-alert switch/send out help signal quietly 11.Car mobile 12.back up power 13.Multi-band of 900/1800/1900 MHZ