9 CONTROL EQUIPMENT FOR INSTALLATIONS ACTIVATED BY AN ELECTRICAL MOTOR, MORE PARTICULARLY FOR VENTILATION PLANTS; COMPONENTS FOR THE CONSTRUCTION OF SAID CONTROL EQUIPMENT, I.E., ELECTRICAL SWITCH CABINETS, ELECTRICAL PLUG-IN CASINGS, ELECTRICAL DISPLAY AND OPERATOR DEVICES, MORE PARTICULARLY IN THE FORM OF INSERT CARDS WITH LUMINOUS PUSHBUTTONS, MICROPROCESSORS WITH PROGRAM MEMORIES AND CODING SWITCHES