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I need two synchronously flashing LEDS (as if they were connected together), but if possible I prefer to avoid connecting them with a wire. No problem with each one having its own battery and a driver. They will be about 2m apart without anything that could stop RF in between. I find it hard to believe there are no ready simple and cheap systems that can be used for such applications, but I am either using incorrect terms when googling, or what I am looking for is buried under other, unrelated systems.
Any suggestions what to look for, or what are correct googling terms?
Any suggestions what to look for, or what are correct googling terms?