Save It Easy® - Power Line Dimmer is an optional attachment for the standard S02 Series. By simply plugging in the Plug & Save Dimmer, light output of the FTL can be adjusted to 3 preset levels for further energy savings in areas where dimming is desirable. Full light output level and preset dimmed levels can be chosen simply by rapidly turning the light on and off via the light switch. Either full light or dimmed levels can be set to come on at first start.