My basement shop has been fully wired to operate by one power switch. I would like to add another switch to power up the shop by entering from another door.
Ahh, the miracles of modern science. You can control your light from multiple locations and you don't even have to run any additional wiring.
wireless 3-way switching, no power needed NOT EVEN BATTERIES!
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This is a good answer, you should add it to the question that this is a duplicate of. – Tester101 Aug 15 '15 at 10:00