The waste associated with manufacturing products that are to be tossed into the landfill in short order is appalling.
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After researching the methods used to make these it's obvious LED's aren't going to work satisfactorily in exterior Christmas decoration applications when produced the way they are now. And to do it right the cost will be prohibitive, unless some big changes are made. Don't hold your breath waiting for that.
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Controlling the voltage on incandescents makes much more sense. Triacs work.