I just bought one on eBay that is supposed to work with LED lights. It was cheap, so I will give it a try. Although, I will only be installing it over the winter.
Here is the eBay listing.
http://www.ebay.com/itm/201204448497?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITThere are other ones, but they are more expensive, and basically do the same thing. All of them are made in China it seems, and just re-branded.