Tilt sensors mount on the garage door and detect its position as it moves between open and closed, making them well suited to overhead doors. Magnetic contact sensors use a magnet and reed switch, typically mounted across the door and frame, and report an opening when the two parts separate.

Before installation, confirm that the sensor type matches the door and security system, such as a tilt sensor for overhead doors, a magnetic contact with the required mounting gap, or a wireless sensor supported by the panel. Review wireless frequency and system compatibility, mounting location, signal path, moisture exposure, and any requirements for pairing, gateway connection, wiring, or a compatible sectional-door opener.

Garage door sensors can send open or closed status to an alarm panel through wireless signals or a wired magnetic contact, depending on the sensor and system. When the panel connects with a smart home platform or mobile account, it can display the door’s current status and send notifications when the door opens or remains open.

When comparing garage door sensors, review the stated wireless range in the intended installation environment, and look for signal protections such as encrypted communication, unique device identification, and compatibility with your security panel. For garages exposed to moisture, dust, temperature changes, or impact, consider sensors with weather-resistant construction or sealed housings, such as an IP-rated enclosure or epoxy-sealed components.