(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.

Third Reality has introduced the Motion Sensor R1, a device designed to improve motion detection in smart homes. This is a PIR based motion sensor, so uses passive infrared to detect motion.

Most of us would probably expect to see a PIR sensor, but this light is motion sensing with microwaves. We have seen such units tested in the past, which links to a video [hclxing] also references.

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 ...

Unique clip-on pet pattern mask. Adjustable 1, 2 and 3-pulse counter virtually eliminates false alarms. Sealed optical chamber protects sensor from insects and air currents. Temperature compensation ...

VST-892HD is a new generation passive infrared (PIR) motion sensor camera with enhanced transmission speed, capable of capturing high definition images (picture quality of up to 1280 x 720 pixels) to ...

"Designed as an energy-efficient PIR sensor solution, our product is not only a robust detector for motion sensing but also a smart sensor for energy management. With multiple form factors and ...