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Access Control | Security Terms

What is a Passive Infrared (PIR) Sensor?

February 22nd, 2024 | 1 min. read

Isabel Leckie

Isabel Leckie

Isabel is a Marketing Specialist at DGA.

A Passive Infrared (PIR) sensor is a type of motion sensor. This technology operates by detecting movement within a specific area by measuring the infrared radiation emitted by objects.

PIR sensors are most useful when they are integrated with an access control system. When a person approaches a door from inside the protected area, the PIR sensor detects their presence, triggering the access system to temporarily unlock the door. This seamless process ensures an efficient exit while maintaining a high level of security.