Combined 16 wireless zones and 8 wire zones Contact ID,ADEMCO,4+1 communication 6 groups telephone NO. setting Up to 4 remote controllers 20 events buffered Easy installation and operating Big LCD screen Voice record setting Built-in-backup rechargeable battery The real time voice monitoring function Built-in -real-time clock Network output Study code for easy connecting wireless device Kidnapped password /Alarm output priority/Wire cutting alarm ect special funtion Under voltage notice /UPS protective Easy programming Automatic study code, easy for setting wireless device Built-in siren Microphone for voice recording Alarm clock Available in 315MHz or 433 MHz