ModeL-A 1. Alarm to telephone 2. Listen in & broadcast 3. Cut off engine by phone 4. Lock/unlock door by phone 5. Friendly user interface 6. Hopping-code 7. Backup battery 8. Integrated unit, metal box 9. Anti-burglar, anti-hijacking, and anti-tamper (Note: For 900/1800 MHz GSM network)