Main feature: 1.Gsm 850/900/1800/1900mhz for global use. 2.With 2 wired zones for connecting wired sensors 3.Full touch keys, beautiful shape, external connect entrance guard 4.Sms 5 phones automatically while alarming and drive wiretap. 5.Call 5 phones automatically while alarming and drive wiretap, can clearly hear the voice. 6..Auto-dial 1 preset phone numbers of alarm center 7.Alarm panel with lcd display & keypad, easy to operate. 8.Sms alert & auto-dial alert when ac power outage, ac power recovered 9.With standby rechargeable battery. The host automatically stores system status, while its power is off. 10.With wired mic interface, switching the sound off and siren 11.Talkback function: can speak with field person. 12.Support 7 kinds arm/disarm mode: remote/mainframe keyboard/sms/remote call/ timing arm and disarm / alarm center software/app mobile phone 13.Delay alarm function(0-90 optional) 14.Arming timing function(0-90 optional) 15.Wireless transmission control 8 road electric switch 16.Timing arm/disarm function. 17.Record function: maximum recording time:20s 18.Voice function:support play the user record voice. 19.Built-in high standard internal antenna with strong signal 20.Original host operating system. 21. Support 6 kinds of voice and languages (chinese, english, russian, spanish, germany, french) 22.With rohs/ce/fcc certifications, conform to 3c safety standard and gb12663-2001 government standard 23.Can modify the host code and defense zone content via sms 24.Can save 300 latest alarming records.