This GT125 fan has its own speed controller built in. It scales from 90m3 per hour at the minimum setting up to 420m3 per hour at full power. The quiet Swiss MES motor draws 65 watts and pulls through a 125mm flange. Backward-curved impellers add up to 15 percent more airflow.
A digital temperature sensor on a 4-metre cable lets the fan respond to room heat, useful when lights cycle on and off. As the room warms the fan speeds up; when it cools it eases back. Cable and EU plug are included, along with a mounting bracket. The motor is covered for one year.