There are as many varieties of smart light switches (and dimmers) as there are light bulbs, and while the prospect of upgrading your old dumb switch might seem daunting, they’re usually pretty simple ...

Stop walking across a dark room to turn on the light. Install a 3-way switch and control lights from two locations.

Dusk-to-dawn light bulbs turn on at dusk and turn off when daylight breaks, detecting the change in light using a photocell ...