Following are the specific functions, 1. With Wavecome double frequency GSM module. 2. With color LCD show screen and keyboard on the host. 3. 10 wireless guarding zones ( 1 wireless SOS zone, 1 fire alarm zone, and other 8 wireless guarding zones can be defined by user ) and 1 external power failure alarm zone. 4. Send SMS to 3 preset mobile phone numbers automatically while alarming. 5. Call 3 preset phone numbers automatically and monitor at site while alarming. 6. Set the time of arm/ partial arm/ disarm. 7. Arm/ disarm by the keyboard on the host, remote controller or SMS. 8. Program the alarm host by keyboard or SMS. 9. Modify the name of 8 wireless guarding zones and inquire the status of alarm host by SMS demand. 10. Define the 8 wireless guarding zones as arm/ partial arm by keyboard on the alarm host. 11. With standby rechargeable battery 12. The alarm host automatically stores system status, while its power is off. 13. Connect with the alarm center through GSM network.