GSM Security Car Alarm System

1. Multi-band (850MHz, 900MHz, 1800MHz) 2. GSM cell phone carrier 3. Friendly human voice instruction 4. Arm/disarm by phone, and remote control 5. Two-stage shock alarm modes 6. False alarm trigger prevention 7. Will call up 3 alarm phone numbers when there is an alarm. 8. Anti-hijacking 9. Override switch 10. Sensitivity of shock sensor adjustable 11. Checking system status by telephone 12. Status LED indicator 13. Remote trunk release 14. Automatic central locking system