GSE Climate Control, governor for temp and minimum speedGSE Climate Control, Temperature and min. speed, Governor, 230 V, 2300 W, 10AThe minimum speed controller is a temperature sensitive speed controller for rooms ventilated with up to three exhaust fans. The minimum speed controller keeps the room temperature constant and prevents the speed falling below the set minimum. It is simple to operate and the required temperature and minimum speed can be set using two dials.