This article explains an upgraded smart solid-state AC switch system that uses microwave Doppler radar instead of traditional PIR sensors.

The motion sensor switch circuit can automatically turn on a water sprinkler but you can easily use it as a motion sensor light switch or motion activated alarm too. Before beginning the construction ...

Posts from this topic will be added to your daily email digest and your homepage feed. is a senior editor and founding member of The Verge who covers gadgets, games, and toys. He spent 15 years ...

Posts from this topic will be added to your daily email digest and your homepage feed. Smart lighting is the most important innovation in lighting since the invention of the lightbulb. It adds so much ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The Christian Science Church, and we’ve always been transparent about that. The Church publishes the Monitor ...

Looking for the easiest path to smart lighting? Screw a smart bulb into a socket. Done! If you’re looking for something with more elegance and sophistication, however, you should replace the switches ...