Toggle turns fan on/off. Slide up to increase speed; down to decrease. 3-quiet fan speeds for increased comfort. For use with only one ceiling paddle fan. Quiet 3-speed designed to prevent motor hum. For use with Hi-lume®, Hi-lume® Compact SE, Hi-lume® 3D, Eco-10®, EcoSystem® ballasts. Also compatible with Hi-lume® LED driver. Adjustable low-end trim.