ControlOMatic SmarterSpa Chlorine GeneratorControlOMatic SmarterSpa Chlorine Generator Smarter Spa is an advanced chlorine generator that produces chlorine from skin soft salt water. It features Chlorine Detection technology that enables the chlorine generator to run only as needed based on your chlorine levels. It doesn't have a timed cycle and will automatically start making chlorine as needed. After it has finished a chlorine production cycle, it may be hours or even days until it turns on