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A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.

We may earn a commission from links on this page. If you have a light that you would like to control without fumbling for a pull string in the dark, or if you have a lamp plugged into an outlet that ...

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 ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That's great for a small room with one entrance.