Passive infrared sensor
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A passive infrared sensor is an electronic device that measures infrared radiation emitted by objects in its field of view. They are most commonly used in motion detectors, including security alarms a
Typical residential/commercial PIR-based motion detector (PID).
A PIR motion detector used to control an outdoor, automatic light.
A camera trap with PIR motion detector.
An indoor light switch equipped with PIR-based occupancy sensor
Thermography
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Infrared thermography, also known as thermal imaging, is a measurement and imaging technique in which a thermal camera detects infrared radiation originating from the surface of objects. This radiatio
Passive infrared sensor
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Thermogram of a cat
This thermogram shows excessive heating on a terminal in an industrial electrical fuse block.
A thermal image showing temperature variation in a hot air balloon
Thermogram of a snake held by a human