Well, I guess it's good to know that ADT watches out for us... I remembered the phone call a couple weeks later actually. Since then I had to rip out the battery and AC connection to get it to stop beeping. And ADT actually called after that for a customer service survey. I told them I am no longer a paying customer and that their service was fine, except for a 3AM call to tell me about something as minor as a battery being low on a system they are no longer supposed monitor was a bit outrageous. I wonder if they do anything right, like make a call to 911 when an alarm goes off.