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.

As an example, [Circuit Valley] has an IKEA Vallhorn motion sensor for a teardown, it’s as you might expect, a passive infrared sensor (PIR) sensor coupled with a Zigbee interface. Inside the ...

Most infrared photodiodes are made of InGaAs, a material that is neither CMOS compatible nor good for the environment. Here’s ...

(Passive InfraRed sensor) A device used to detect motion by receiving infrared radiation. When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal.

Motion detectors are devices that contain either a physical mechanism or an electronic sensor that detects motion within a specific field of view. Common motion detectors include passive infrared (PIR ...

The most common motion sensor we see in cameras is a passive infrared (PIR) sensor, which detects heat (infrared energy) that ...

The IS-2260 Passive Infrared Motion Sensor provides reliable detection with pet immunity up to 40 pounds and is ideal for both residential and light commercial applications. Optimum performance is ...

The IS-280CM is a commercial ceiling mounted passive infrared motion sensor that provides a 360° detection pattern in a sleek, low-profile design housing. Optimum performance is achieved by using an ...