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 ...

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

This light sensor switch circuit allows the automatic connection of a lamp when the light is low (at nightfall) and will maintain the lamp ON for a certain period of time. This time can be adjusted ...

Elgato's Eve lineup of smart home devices is one of the largest contributors to the HomeKit ecosystem, with a variety of sensors and switches for inside and out, including five more products announced ...

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 ...