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.

  • Buck@lemmy.world
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    7 months ago

    I use something like this for my wireless doorbell because people kept stealing the battery. I’ve had it for years and it works really well.