Help protect your home and family with an ADT Door and Window Detector. Initiate optional ADT professional monitoring services when an intrusion is detected in your home. Receive alerts if doors or windows are opened unexpectedly. Set lights and other connected devices to turn on and off as people come and go. Requires an ADT Security Hub, plus one or more compatible ADT devices. ADT professional monitoring services may not be available in all areas and may require permitting or additional service fees.