Various fans are used to ensure sufficient cooling in the systems and fan control mechanisms balance the cooling / heating capacities used by the fans. Always operating in maximum power mode negatively affects both the life cycle of the fans and the stability of the process applied. Therefore, fan speed controllers are needed to create more stable and long-lasting systems. Dixell fan speed controllers manage the rotation speed of the fans and allow the fan speed to be changed. In addition, controlling the fan rotation speeds significantly reduces the noise level in the rooms while increasing the ventilation efficiency.