It is a Telephone Networking Alarm Console with LCD display and 4*4 keyboard, and there are 16 zones (8 wireless zones + 8 wired zones). It works with wireless remote controllers (up to 8 remote controllers), various wireless/wired detectors, sensor switch, hand button, and foot switch and wireless/wired sirens. And they make up a completed safeguard system to guard against theft, fire, and so on. It can be stored up to 5 groups of pre-set telephone numbers (fixed/mobile telephone number and pager number). Once alarm happens, the main unit will activate siren to make alarm sound immediately; and dial pre-set telephone numbers at the same time. It is widely used in residence, marketplace, finance system and enterprise. www.karassnsecurity.com