These items are listed for part or not working just because I do not have the means to power them up. If you look at the last photo, you can see what they need to power them up. However, I buy a lot of light, all the one I can test works properly but these ones, I cannot say any thing about them. Please, look at the photos in order to see what you are buying. Also, for the model, I cannot say if the last number is E or F. If that matter to you, look at the 5th or 6th photo in order to see if it is E or F