Smart switches require a neutral wire for power, but many older homes do not have one available. You should never attempt electrical work unless you are a licensed or experienced electrician.

Older homes sometimes lack a neutral wire (which is typically white) in every box where a light switch is installed. That can be big problem for smart switch upgrades, which almost universally require ...

Aqara’s smart light switch looks good, works well, and is compatible with Alexa, Apple HomeKit, and Google Home, but you’ll need to go all-in on Aqara’s ecosystem—which doesn’t include a smart ...