Relay Light Switch: 7 Best Picks for a Smarter Home (2026)
A relay light switch is any switch — traditional toggle, hidden module, or smart in-wall unit — that uses an electromechanical or solid-state relay to open and close a lighting circuit, and today the term almost always refers to Wi-Fi, Zigbee, or Z-Wave smart relay switch products that let you control that circuit from your … Read more