I, with vendor help, modified it for 120v. Worked on a used incandescent bulb, but it burn out. It did not work with a brushless fan (I didn't expect it to work) All in all, well made, fantastic support, both pretty and post sales. Put one into service and kept a second to keep on hand just in case.
The support is great (both pre & post-sale). I modified for 110v and it seems to work. Worked on an incandescent bulb, but bulb burned out (was a used one from a junk drawer), did not control a brushless fan (but I didn't expect it to) -- the board is well labeled and put together nicely. Did I mention great support?