The SunZone CD options on system-ready models utilize ozone technology to effectively remove water impurities and micro-organisms. Reduced chemical usage and less maintenance are the two most significant benefits you get from using the SunZone CD system, found only on Sundance spas. The units use a highly efficient corona discharge (CD) element to maximize ozone production and provide clear water, surpassing the capabilities of UV-ozone options. Ozone maintains the water balance longer; so the spa will not need to be drained, refilled, and reheated as often. CD Ozone Generator, 240 Volts.Life Expectancy: 4-5 years.
Takes the place of The CD/SE Ozone part # 6472-845, 6560-286/287.Comes with 2 check valves and hose for installation. 

Note: If installing on older Sundance (pre 2005)Adapter cord, 6000-953, must be purchased to plug into the old style Molex Plug. Comes with installation instructions. Does not come with Mazzei injector, sold separately.