To tell you all the truth, the pager systems are a waste of money. I used to sell them when I worked at circuit city. I usually told ppl to shy away unless they absolutely wanted it. Besides they have a real short range. If you have a DEI alarm, the pager system has a really short range, somewhere between 500-1000ft and doesn't work to well in some buildings (ie. metal framed). Now, on the other hand, the viper 790xv and it's clifford equivalent (both DEI alarms) have a built in graphic pager system that, from my experience, works from up to a half a mile away and through any building material.