The SMSCOM Twin Fan Controller 4.5A Mk2 controller represents a real step forward in automatic temperature control. Unlike other controllers that simply shunt fans from idle to full speed after the temperature is exceeded, the Twin Controller automatically calculates the exact running speed for your fans to maintain the temperature you set. This new method provides more accurate temperature control, limits fan noise and guarantees negative pressure inside the room. Simply plug in your fans set the temperature and the Pro Twin Controller will take care of the rest.
*PLEASE NOTE: When running fans at a very low speed, a slight buzzing noise may be heard. For completely silent fan operation we recommend the SMSCOM Hybrid Fan Controllers or the new RHINO Silent Fan Controller range.