In addition to equipping your home with an alarm that will immediately alert a customer monitoring center when triggered, an ADT alarm also features a chime that sounds when people enter and leave your house. The home alarm chime feature works when the alarm is disabled, and will let you know who is in your home. If you'd prefer not to hear the chime, or have so many party guests that it becomes a disruption, you can turn it off in a few easy steps.