Why would light switch manufacturers write the words on and off on their switches? Is it not obvious if the light is on or off? - Quora
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160+ Light Switch Off Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Turning light switch off, Light switch off vector, Light switch off icon
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Electric Light Switch in on and OFF Positions Stock Vector - Illustration of house, environment: 19398372
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Off Switch Stock Illustrations – 22,516 Off Switch Stock Illustrations, Vectors & Clipart - Dreamstime
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