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

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 ...

Sean Hollister is a senior editor and founding member of The Verge who covers gadgets, games, and toys. He spent 15 years editing the likes of CNET, Gizmodo, and Engadget. I recently replaced most of ...

“A GREAT gift for the elderly or those with fall risks,” raves one reviewer.

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 ...

Everyone wants lower energy bills. If you're looking for ways to save energy and money, motion sensor lights can help more ...