Lots of the comments don't trust Google, but I'm not sure I would trust ADT. I was looking to buy a house, which had an ADT system installed. I just called them up, asked about the address, how much monitoring would cost, etc. and they told me what kind of panel, sensors, etc. were installed at the house. No verification at all. Clearly this would help with their sales, but from the perspective of someone who owns the system; I would not want them to give out details of my security system to anyone.