You don’t need to spend a fortune on smart bulbs just to bring voice control, dimming, or scheduling features to a room. In fact, smart light switches are often a better and cheaper option than smart bulbs, as they add smart functionality to cheap, “dumb” light bulbs. And now that Amazon is selling smart switches for under $20, I can’t see a reason to keep buying smart bulbs.
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Source : Amazon Launches Four Shockingly Affordable Smart Switches
