Required for use of the fixtures, the Controller with DMX for FL 400 and FL 800 Flexible Panels with V-Mount battery Plate from Cineroid is the "brain" of the system. The ballast controls adjustments of color temperature from 2700 to 6500K and light intensity from 0 to 100%. Onboard DMX allows the adjustments to be made remotely from a console. An AC adapter is required to power the light and controller. This version of the controller has a battery plate for optional V-Mount batteries that can power the fixture when mains current is unavailable.