... One-key arm function, easy operati Wireless & wired alarm system: 1) The host with keyboard and LCD display, ... can get the first line when alarm and send the alarm system out.(8) When the telephone line ... Checking arm, disarm, alarm issue, etc.15) The host adopts AC220V, DC12V/7AH dual power supply. Usually, recharge ... power cut, it will auto-change into battery supply. (it can be able to work more than ...