The new INSTEON Ballast Dimmer is two products in one: A 0-10V control module for electronic dimming ballasts and a two-relay control module for traditional non-dimming fluorescent light ballasts. Installed alongside your fixture"s existing fluorescent ballast, Ballast Dimmer adds INSTEON control and dimming to a wide range of commercial-centric fluorescent lighting. And the best part: Since INSTEON uses your installations existing electrical wiring for command and control, there"s no need to tear up the walls or spend hours in (tight/awkward/precarious) spaces running new electrical wiring. Ballast Dimmer can dim electronic dimmable ballasts that respond to a 0-10VDC input signal. Depending on the electronic ballast, you may be able to smoothly dim your fluorescent lights as low as 3%, providing reduced power consumption when a room is unoccupied and helping to create atmosphere with reduced lighting levels.