Looking for a feature-laden, premium UV system? Then Puretec Radfire’s RI-6K of UV systems should be your choice. When looking at this line, it is easy to see how this product is truly different from everything else in the market. Puretec Radfire’s state-of-the-art controller is a constant current electronic power source housed in a splash-proof case and comes standard with a “future proof” expandability port for future upgrades or options.