Researcher has developed, at a cost of less than one dollar, a wireless light switch that runs without batteries, can be installed anywhere on a wall and could reduce the cost of wiring a house by …::A U of A engineering researcher has developed a wireless light switch that could reduce the cost of wiring a house by as much as 50 per cent.
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I imagine replacing the battery in your light switch in the dark (because you can’t turn the lights on) is probably rather annoying. This sounds like a cool idea.
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