Door Loops

What is a door loop and how does it work?

A door loop is an electromagnetic device installed in door frames that detects whether a door is open or closed. When the door closes, a magnetic contact within the loop triggers a signal sent to the access control system. This allows real-time monitoring of door status.

What's the difference between magnetic and electronic door loops?

Magnetic door loops use a switch activated by a magnet on the door, offering simple, reliable operation without using a lot of power. Electronic loops use more sophisticated sensors and may provide additional features like tamper detection, or advanced diagnostics. Magnetic loops typically cost less and require minimal maintenance, whilst electronic versions offer greater functionality for more complex security environments.

What happens if a door loop fails?

Depending on system configuration, a failed loop typically triggers an alarm alert and may lock or unlock the door according to the system’s designated fail-safe settings. Most systems log the failure event, allowing the issue to be addressed promptly.

Are wireless door loops more reliable than wired ones?

Wired door loops generally offer greater reliability since they don't depend on battery power or wireless signal strength. Wired loops suit large facilities with extensive wiring infrastructure, whilst wireless loops work better for retrofits, smaller areas or areas where running cables is impractical.