with a wall serving as conductor plate 31 fig9 which in addition to electric spring contacts 32 for temperature sensors 19 and motors 21 22 23 is provided with plug contacts 33 for connection to the supply voltage of a transformer not shown and a bar 34 to deliver the supply voltage to the electronics of control 35 having a multi pole flat cable plug 36 for connection to bar 34 motor reducer module 18 is equipped with manually actuable shafts 37 fig4 of which two shafts are directly connectable to gears 29 of coupling 27 for cold and hot water valves 12 13 while being decoupled from transmissions of motors 21 22 the third shaft 37 is continuously in communication by way of a belt drive not shown with external teeth 38 of coupling gear 27 associated with motor 23 for three way valve 14 as shown control module 35 fig5 provides led displays 39 fig1 and a film keyboard 40 for the various functions such as on and off switch shower or tub flow and temperature setting cold or hot water operation time recall and possible other functions control module 35 is provided with handwheels 41 the outer two of which may be brought into engagement with gears 29 by way of two of the shafts 37 in the event of power failure associated with motors 21 22 for hot and cold water valves 12 13 two outer handwheels 41 are.