Sensors, Sirens & Doorbells / Motion Sensor
What is the difference between PIR motion sensor and presence sensor?
Short answer: PIR detects movement, while presence sensors can detect smaller micro-movements depending on technology.
Explanation
PIR sensors detect changes in infrared movement and may not detect a person who is sitting still. 24GHz radar presence sensors can detect micro-movement and are better for presence detection in rooms.
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