The MFC series features 10 different confi gurations so that the right fan controller is always available for you. The series is a simple and easy tool for keeping the climate in a house and the corresponding energy costs under control. The fans are controlled such that the preset temperature is maintained. Variations in mains voltage are compensated by the integrated internal stabilisation function. The mains switch with its bridging position switches the fans over directly to mains voltage in the event of a calamity. These technologies ensure a reliable series of fan controllers.