ADT dominates the industry because it's the oldest security company on the block. The company has a good selection of equipment, and the mobile app is easy to use, but the higher costs might turn some folks away. We also like its compatibility with home automation devices.
We’ll teach you about ADT equipment, what it costs, and what it works with. For information about ADT's professional monitoring, customer service, and installation, head over to our full ADT review.