just at the right temperature,without sudden changes or loss of time or water.mixer taps designed to keep the previously selected water temperature constant features they have a thermostatic cartridge,with control on the right for pre-selecting the required temperature limiter(red button). on the left,the tap handle with half-turn ceramic mechanism and flow limiter (green button,50% saving)that allows reduction of water consumption. installation possibility of installation with instantaneous water heters,fitted with non-terurn valves and filters. applicable to centralized installations or for bath and/or shower.