Grohe Grohtherm SmartControl Dual Function Thermostatic Valve Trim - 29141Grohe Grohtherm SmartControl Dual Function Thermostatic Valve Trim 29141 Dual function thermostatic shower trim with intuitive SmartControl operation and precise temperature management. Features Controls up to 2 shower spray sources Use spray functions individually or simultaneously GROHE SmartControl push turn controls: Push for on off Turn for water volume adjustment GROHE TurboStat technology maintains consistent water temperature GROHE SafeStop