SA-O alarm host adopted American original chips, micro computer control technology. Which is a intelligentzed, digitalized and multifunctional LCD display alarm integrated sensor, communication and computer. This alarm system transfers the alarm voice to users by telephone or transfer alarm information to alarm monitoring center by receiving the alarm signals from all kinds of wireless detectors. And also it can conduct spot alarm; it is a learning code alarm, in this case. The users no need to set the ID codes. It is an auto dial alarm for burglarproof, anti-rob and Fire protection and emergency help used in business unit, financial system, business place and Inhabitant family. It can be independently used or connected to MeiAnBo