Riobel Authentica 1/2" Therm & Pressure Balance Trim With Up to 3 FunctionsRiobel Authentica 1 2" Therm & Pressure Balance Trim With Up to 3 Functions Advanced RioWise valve technology ensures stable temperature even with significant water pressure drops. Features RioWise valve maintains consistent water temperature despite a 50% pressure drop No need for a separate shut off or diverter valve for a cleaner wall design Temperature memory lets you set and maintain your preferred comfort level Supports up to three functions