A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.

[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion sensors. Most often seen in security floodlights and automatic doors, in creative hands these sensors ...

The presented schematic shows how to build a simple PIR motion sensor. PIR sensors allow motion sensing, it is almost always used to detect whether someone has moved in or out of the sensors range.

Passive InfraRed sensors (PIRs) are electronic devices which are used in some security alarm systems to detect motion of an infrared emitting source, usually a human body. All objects, living or not, ...

Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.

Tempe, Arizona - Southwest Microwave, a leading global supplier of perimeter intrusion detection systems, has announced the introduction of the advanced Model 420 Passive Infrared (PIR) Sensor for ...

Unlike infrared optical sensors that use an LED transmitter and IR receiver, the PIR emits nothing. As its “passive” name suggests, it responds only to infrared energy radiated by the object being ...

Featuring a New In-House Designed IC, Devices Provide Pin to Pin Replacements for Previous-Generation Solutions While Offering 50% Lower Power Consumption and Improved Performance MALVERN, Pa., Aug.

Featuring Typical Irradiance of 1.3 mWm², Devices Offer Typical Long Range Presence and Proximity Sensing of 1 m, and 11 m for Light Curtain Applications MALVERN, Pa., June 28, 2023 (GLOBE NEWSWIRE) - ...

NÜRNBERG, Germany, June 9, 2026 /PRNewswire/ -- Raytron Microelectronics is showcasing its advanced IR camera module portfolio at SENSOR+TEST 2026 (Hall 1, Booth 1-616), held June 9–11, 2026, at ...