CIRCON - Smart Circulation Pump Control Electronic circulation controller for controlling the hot water circulation pump, including all necessary accessories, installation materials, and operating instructions. This circulation controller has a country-specific plug and can only be used with Swiss electrical outlets! The circulation pump in your drinking water system ensures that hot water is always available at every faucet-even when it isn’t needed. This results in a significant loss of energy. CIRCON is a control unit for the circulation pump that ensures the highest possible comfort and excellent drinking water hygiene. It is complemented by comprehensive diagnostic functions.