Light switches are something most people take for granted. They blend into the background of everyday life, kind of like doorknobs, hooks, and handles do. (Light switches are also the last thing I remember to clean and the last thing my husband remembers to turn off.)A smart light switch makes that routine wall art stand out. Sure, it’s just as useful and practical as a regular light switch. But the technology inside allows you to control one light, one room, or an entire home’s lighting with a voice command or an app, whether you’re at the office or in bed for the night, or you just have a switch that’s out of reach.After testing dozens of smart dimmers and switches, we’ve found something for every lighting need. Our top pick is the TP-Link Kasa KS225 Matter Smart Wi-Fi Dimmer because it’s easy to use, extremely affordable, and compatible with every major smart-home platform. However, it works only in homes with a neutral wire. If you live in an older home without one, we recommend the Leviton Decora Smart No-Neutral Dimmer DN6HD.