Ive got one 5231 Starlight on the side of my barn completely exposed to all the elements, sun 24/7 and rain. I'm amazed at how the picture is always good. Sometimes when it rains i Wil see a few drops on the lens, but that clears up quickly. Maybe it is dirty and i just don't know it... But it seems good. Been up for 3 months now. My old Hosafe bullet that was in that location was always good too.