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.
The features are great but I am spending much more than I anticipated spending. mainly the equipment I bought.
The only thing I did not like was they had the volume up all the way and my dog freaked out. Also I had to figure it out myself. No booklet and I had to call the support became they had the exit set at 60 seconds which is too long so they put it to 45 seconds. The installers should check with the customer to see what they prefer instead of just assuming.
ADT was a great addition to our new home. It was quick and painless to set up.