Choose recessed closed-loop door contacts for a low-profile installation, including steel doors, while surface-mount contacts fit walls and doorframes with screw or adhesive mounting. Choose track-mount contacts for overhead or roller doors, and compare the contact gap, mounting hardware, armored leads, and environmental rating with the installation requirements.

Choose a closed-loop door contact with a gap rating that matches the distance between the sensor and magnet when the door is closed, allowing for alignment and movement during installation. Door material also matters: steel doors may require a recessed contact with a larger magnet designed to work through steel, while surface-mount or track-mount contacts can suit wood, aluminum, overhead doors, gates, and other applications when their housing and mounting method fit the installation.

Before installation, confirm that the security panel supports a hardwired closed-loop zone and check its requirements for normally closed contacts, two- or three-wire connections, and end-of-line resistors. Verify the contact’s switch configuration, lead type, loop wiring method, and zone compatibility, then test the circuit at the panel after installation.

Track-mount magnetic contacts with durable aluminum housings, armored leads, and closed-loop operation fit overhead doors and roller tracks in commercial and residential applications. Surface-mount magnetic contacts with adjustable brackets and tamper-resistant armored leads also suit gates and other commercial entry points.