industry gsm alarm system

Main functions: 1. With WAVECOME GSM module. 2. 8 digital inputs, 2 wireless zones and 1 external power failure alarm zone. 3. Can program open/closed alarm of digital inputs. 4. Digital inputs are adopted optical-coupled isolators, which can prevent external high voltage from destroying internal components. 5. Send SMS automatically to report the state of digital input when it returns normal status. 6. Send SMS to 3 preset mobile phone numbers while alarming. 7. Auto-dial 3 preset phone numbers while alarming and monitor the sound at site. 8.You can arm/disarm and program the system by wireless keyboard, SMS or phone 9.You can call the mainframe at any time and listen what happened in the alarm area. 10. Modify zone name and check status of alarm mainframe by SMS. 11. Switch to Backup rechargeable battery when power is failure or cut by intruder. 12. External power failure alarm: when the system checks out that there is something wrong with the external power or the external power is off for more than 2 seconds, it will alarm immediately 13.With password protection function 14. Aluminum alloy casing. 15. Can send alarm signals to monitoring center through GSM network, such as the police station. 16. GSM frequency: GSM900/1800/850/1900MHz