CBProjects

@CBProjects@lemmy.world

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⁨Comment⁩ on ⁨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 ...⁩ ⁨⁨1⁩ ⁨year⁩ ago⁩:
I saw a similar device in a friends new build 3-4 years ago. It used the energy from you pressing the switch to transmit to the fitting.