On my two-gang light switch, why does the second switch only work if the other switch is also turned on? - Quora
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A guide to getting started with smart lighting: When to use smart switches and smart bulbs - The Verge
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A guide to getting started with smart lighting: When to use smart switches and smart bulbs - The Verge
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The mystery of the useless light switches and the light that cannot be controlled. : r/HomeImprovement
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