The Grozone DIM1 Fan Speed Dimmer has a manual setting to slow down centrifugal fan speed between 10% and 100% of full power. It Enables the user to activate / deactivate a "Kick start" at power up or power failure return, to improve larger fan start-up.
This unit can drive single phase 120 Vac induction motor type fans up to 750 Watts, and is ETL listed.