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

On the far end 3 way switch, black was common, and red was the traveler connecting the two three way switches. White was used to return common back to the box the first switch was in.

Nintendo Co. sold 3.5 million-plus units of the Switch 2 in just four days, a record-breaking start for the company’s first new console in eight years.