Name: gsm home alarm system-g40 Supprot contact id communication protocol Preset 5 telephone & sms number Main features: Concise and elegant plastic house with simple operating interface Contact id communication protocol Lcd screen with calender, gsm signal level With 30 wireless alarm zones, gsm sms alert and telephone alarm Can preset 5 groups telephone, with functions of recording, voice indicating and monitoring Alarming priority, log function, built-in back-up battery, ac/dc power both available 5 arm/disarm ways: remote controller, host keypad , remote controlling keypad(options) , telephone/mobile phone and sms Outer power off inform via sms Technical parameter: Working voltage£º100~240vac Operating power: 9-15vdc Gsm frequency£º900/1800mhz, 900/1800/1900mhz, 850/900/1800/1900mhz Wireless frequency£º433mhz Static current: ¡Ü 80ma Alarm current: ¡Ü 500ma Gsm transmission power: 2w Operating environment: temperature: -10¡æ-50¡æ; humidity:£¼90% Maximum available quantity of keychain remotes: 4 pcs Maximum available quantity of wireless sensors: 116 pcs Dimension£º180*120*5(mm) Standard package: - alarm system (control unit) íºc 1 pc. - wireless pir detector íºc 1 pc. - wireless door (gap) sensor íºc 1 pc. - remote controlleríºc 2 pcs. - antenna íºc 1pc. - wireless sound&flash 110db/0.3m íºc 1 pc. - power adpater íºc 1pc. - user manual íºc 1pc.