Automatic door sensors typically connect through a wired relay output to the door operator or access control panel, activating the same input used by a request-to-exit device or push button. Many models can replace traditional request-to-exit switches using existing wiring, while adjustable activation timing, manual override options, and status indicators support integration with different door and access control setups.

Indoor automatic door sensors typically require a suitable wall-plate or single-gang installation location, connection to the door operator or access-control system, and compatible battery or DC power, with some models using existing request-to-exit wiring. Outdoor installations call for a weatherproof sensor with a durable faceplate, appropriate mounting, adjustable detection and trigger settings, and wiring or power suited to the site conditions.

Touchless, wave-to-open sensors use infrared detection to activate an automatic door or request-to-exit device when a person waves nearby, without physical contact. Motion-based sensors detect movement in their coverage area, while other automatic door sensor technologies may use presence detection or pressure activation, so the right option depends on the door, traffic pattern, and installation environment.

When comparing automatic door sensors, review whether they use battery power, DC power, or 12 to 24 VAC/VDC, along with relay capacity such as 1.2A or 3A, and the available detection range, which may extend up to four or seven inches depending on the sensor. Also compare adjustable trigger timing, momentary or toggle operation, proximity activation, and options such as manual override or audible and LED status indicators.