I can characterize my experience with ADT as one of the most frustrating to date. My wife and I had a $3,000 Custom Home System installed in September and have had nothing but issues. Last month a tech visited the house to fix one of the iCenter monitors that had stopped working approximately two weeks after activation. He walked in and out of the house numerous times, unplugged cat5 cables that did not correspond to the ADT system necessitating that I come out of pocket for repairs to my network, left the house stating that he was going to pick up a monitor and would be back that day. Approximately 4 weeks later we are still waiting for him to show up. This morning I learned that it is possible that ADT is going to charge me to fix what has really never worked. If you are looking to purchase a security system, please look at other providers. Our sales guy promised the world, none of which has been delivered. When it is all over I will have spent almost $5,000 in equipment, installation and servicing fees for a system that has not delivered what was promised.