A 4-way switch controls one fixture (like a light) from three or more different locations. Four-way switches are often used in large rooms or with open floor plans. Read on to learn about 4-way ...

PITTSBURGH, Sept. 27, 2024 /PRNewswire/ -- "I thought there could be a better way to power lights using a 3 or 4 way light switch," said an inventor, from Willet, N.Y., "so I invented the 3 OR 4 WAY ...