本文在现有的家庭报警器基础之上，将无线通信模块引入报警系统，使系统可通过固定电话线和无线通信模块向外界报警，这样就克服了报警器因电话线被恶意剪断而失去报警功能的问题。
So the alarm can be set by telephone and mobile phone , which overcomes the shortcoming that the system will be out of work when the telephone line is cut off deliberately .
家庭报警器