Alarm.com Aero Door/Reader Two Door Access Control Expansion Module (ADC-AC-X100)Alarm. coms Smarter Access Control is a powerful, easy to use solution for commercial properties that seamlessly integrates with the Alarm. com for Business platform. This platform enables intelligent automation and features, such as disarming when badging in, locking doors when arming, and tagging access events on the video timeline. The X100 Two Reader Expansion Module adds support for two additional readers with four relay outputs and four