(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.

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 ...

Sealed optical chamber protects sensor from insects and air currents. Temperature compensation for optimum catch performance and false alarm protection. 30 V/m advanced RF protection up to 1 GHz ...

A 360° ceiling-mount quad element PIR motion detector with optional integral glass break detector, Bravo5 is ideal for rooms requiring a uniform 360° detection pattern or for rooms requiring the ...

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

It comes with a PIR motion sensor that will automatically activate when it detects motion within 30 feet. Equipped with 3 D-cell batteries you can install them in big bathrooms, porches ...