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.

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.

The OPB725 Series long-distance reflective switch has a sensing distance of 24 in. or more, depending on the object. The switch consists of an 850-nm infrared LED and Photologic sensor in an opaque ...

The Orro Switch is expensive, but it offers some nifty tricks that put it near the top of the market. With options like Noon and Brilliant now available, high-end lighting has landed squarely not just ...

This article is sponsored by Aqara. Product choices and opinions expressed are from the sponsor and do not reflect the views of Android Police editorial staff. When it comes to smart home automation, ...