The Grohtherm SmartControl Dual Function Thermostatic Trim from GROHE is a slim, contemporary design that will enhance any bathroom and make showering more enjoyable. Innovative and intuitive to use, the dual-function SmartControl lets you adjust water volume from two spray sources with the simple push-turn of a button. Easily switch between sprays, experience each spray individually or enjoy both at the same time. It features integrated GROHE Turbostat technology to keep water temperature consistent for the duration of your shower, preventing any unpleasant hot/cold fluctuations. Please note that this product must be installed in combination with the GROHE Rapido SmartBox (35601000).