The tech who came out to install it was extremely knowledgeable and made sure I knew how to use the system properly before I left. He was great to deal with, and the whole experience was very positive!
ADT's service person was knowledgeable and efficient. Large order, he had to come back to finish. Checked in with me, long distance, when finished. Service center is great about checking in when a question arises. I don't go for a lot of bells and whistles, easy to understand and operate.