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.

The “intelligent induction lamp” is a cheap indoor motion sensor nightlight that comes in handy so you do not have to fumble for the light switch in the dark. It is in fact a compact motion sensor ...

New thin film pyroelectric sensors, fast switching IR sources and suitable gas cell design enable new levels of ppm detection levels. Tighter legislation on environmental polutants and a public desire ...