Hayward SAS Salt and Swim 3C Salt Chlorinator Control Unit is Hayward’s entry level, DIY-friendly salt chlorinator that delivers the 3Cs of salt chlorination - Comfort, Convenience, and Cost Savings you'll love. You'll get the comfort of silky soft water, that won't turn eyes red. It’s a more natural approach to chlorination which also eliminates the harsh chlorine odor associated with factory-produced chlorine. Convenience means no more lugging heavy buckets and jugs of harsh chlorine. With salt chlorination, sanitizing pools happens automatically by converting ordinary salt into 100% pure chlorine.