I recently moved into a home that had an existing ADT system in place. I was told that if I signed a 3 year contract a technician would come in and hook up the already very sophisticated system in the home. From 9 am to 7 Pm the technician was there and when the system was going to be turned on after all this time he said 14 of the sensors dont work and it would cost $1300+ to get it up and running. These guys are the scum of the earth, they are unethical, sleezy and I have no filed a complaint against them on the BBB and the consumer protection act. STAY AWAY FROM THESE GUYS.