KWC ONO touch light PRO 12.652.011.000 Instrucciones De Montaje Y Servicio página 66

Changing the default programme
settings
Select the tip'n'flow 1-2-3 position, then set your preferred flow rate
and temperature and release the button.
Press the button and hold it down until the light ring shines purple.
Release the button to save the settings (indicated by the light flashing
twice).