ADT doesn't monitor the system at all. The transformer they provided to us wasn't working and we lost the battery because of that. They couldn't detect weather our system was still working or not. I called them after three weeks to notify them about the failure. The reply i was getting them was bull-shit. I wonder how easy it would be for a bugler to break the system from out side and get into home, or what would happen if fire broke out in my house... They don't even monitor all these. We have been having the system... read full review »