I had a Hayward 580 series light that kept tripping the breaker and I decided to give this light a try. I was skeptical because pool lights are rather pricey, but this one is much less. This light is rather heavy and seems to be well built. I mounted the controller and transformer in an old cable box that was already on the wall. It is plugged into an outlet that's controlled by a switch. When switched on, it defaults to the last setting used. I have it fading through different colors. It was difficult figuring how to adapt it to my series 580 can. I removed the original beauty ring (plastic), installed a screw in the lower hole of the can for the outer ring of the light to rest on, and used a 1/4\" nylon spacer on the screw to eliminate slop. I installed a single screw in the top of the can that barely fit between the outer edge of the light and the can, tightened so that the head holds the light in tightly. If my original trim ring would have been metal instead of plastic, I would have adapted to it. Only time will tell how long it lasts - I am hopeful.
FishinFireman 
