Purchased these for my trailer, and they worked perfectly. Based on the price, I was expecting a few to be non-functional. But all of them worked, much to my surprise. They were even properly polarized to allow the LED portion of the board face in the correct orientation in my RV lights. The color temperature is perfect for a more natural light, and I greatly reduced the total current draw on the batteries across all 20 lights. Highly recommend
Great buy