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.

(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. PIR ...

Aqara has brought the first occupancy sensor that works with Apple Home to market that can easily trigger automations based on whether or not someone is in the room. Here's how it works and whether or ...