Do you happen to remember X10, the device-control-over-power-line protocol that was mega-popular in the ’80s? It’s still around, and it’s still super cheap. But after 20 years of over-the-counter and DIY innovation it’s a lot easier to mess with — as is its more modern coutnerpart Insteon. Here’s the short of it: By installing control units between power outlets and your appliances, you can turn everything on and off via remote control. One unit accepts the commands from your remote control, passing commands to the various modules via encoded signals over your power lines.
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