I have done some research into this, and I notice that most local companies and all of the Joel Matlin comapnies (Alarm Force and Think Protection ) , are pushing wireless systems very hard. I mention to them I want a wired system or a mixed wired/wireless system, because eventually thieves will use wireless do-hikeys like they use against cars. The guy on the phone laughs, but I go hard for wired or mixed systems, with cellular backup .