1. Checking system status by phone 2. Voice frightening 3. Trigger alarming(opening the door and engine start) 4. Cell phone control(arm/disarm, power cut off, seek the car, monitor) 5, friendly human voice instruction 6. GSM car locating and seeking 7. GSM cell phone carrier 8, emergency help 9. Parking reminder 10. Override switch 11. Sensitivity of shock sensor adjustable 12. Compatible with any cars. 13. Remote trunk release 14. Anti-hijacking Mainframe Working Voltage:12V Static Current(+GSM Module):40mA-60m Arm/Disarm Working Frequency:300MHZ-500MHZ Cover Area and Capacity:identical to the GSM system Location Accuracy:10-300M(which depends on the GSM service) Alarming Time:Last until it is disarmed or the alarm telephone is answered GSM Modules Frequency Range:GSM 900MHZ/1800MHZ; Voltage of serial interface:2.8V; Control Distance:No limit in the network of GSM Stand-by Current:11-25mA. Remote Control Working Voltage:12V(1A27 12V dry battery) Working Frequency:300-500MHz Control Distance:>20M<100m Satic Current:0mA Working conditions Mainframe Storage Temp:-30-85C Working Temp:-20-65C Working Humidity:25%-95% Accessory Storage Temp:-40-100C Working Temp:-20-85C Working Humidity:25%-95%