most of it has been already mentioned about this product on Amazon. I have the lamp in the basement and is a lot of light! The build quality is really good. Everything was very well designed. With two screws that attach the lamp and the rest via the terminals which be opened by pushbuttons. I would recommend this product to 100%. Initially follow me out the fuse. Have read a lot what it could be, and had been thinking of a defect in the lamp. So Ruck Zuck written support and get over the Easter holidays even an educated answer. Ultimately, it was a problem of my insulation power cable which was old and in several places the insulation was broken. This led to a short to ground. Subsequent isolation corrected the error, now I enjoy the fast switch and the bright light to the fullest. Thanks again for the support !!