This was the quickest way to get the ceiling fan working again, so I bought two. Since I'm an electrical engineer and have two "identical" parts, I made a comparison between the parts and their respective properties. Both parts passed the test well, but one seemed more than 10 times better than the other. By "better" I mean that the series resistance (which dissipates the power and heats up the part) was exceptional on the one hand and good on the other. This is very unusual for parts from the same batch. I have included photos of the measurements on both parts showing their differences. I used the best part and received a refund for a part that I have not used and will not use or never use. The best part worked fine. Podoy people required these attached photos before offering a refund. A lot of extra work for a few dollars. I recommend this product with suspicion based on my experience of its inconsistency.