This smart little accessory could save you hundreds

Do you have a room in your house where there’s a light switch on one end, but you wish there were a switch on the other side, too? Before calling an electrician to install a new light switch — which means cutting at least one hole in your wall, and possibly more to create a three-way circuit — a smart light switch could be a cheaper solution.

Advantages of smart light switches is that you can control them from your smartphone, connect them to other smart home devices, and more. But some of the companies that make the best smart light switches even sell a “companion” switch that works in conjunction with the main light switch.