TechniChlor Spa Chlorine Generator With Self Cleaning and Adjustable Power Output Spa and Hot Tub Chlorine Generator that installs in minutes, just add salt, plug it in and drop in the SPA!! 10 Levels of Chlorine Production without buttons or knobs, uses Tap Technology! Self Cleaning Reverse Polarity Technology, The Titanium plates reverse every 12 hours Plug & Play! No Spa Modifications Required Around-The-Clock Chlorine Production lowers your maintenance demands giving you more time to enjoy your SPA