The V-Mount Ballast for CL800 RGBW LED Light from Cineroid is a combination ballast and controller that's basically the "brain" of the system. The ballast has color temperature control from 2700 to 6500K with dimming from 0 to 100%. RGB Mode allows you to specify a value for Red, Green, and Blue output, while Hue and Saturation Modes give access to myriad color combinations. The Effect Mode accesses special effects such as Thunder Bolt, Night Club, Camp Fire, Mercury Light, and Moon Light. By connecting multiple units together, you can designate one ballast as the "Master" and others in the "Slave" mode, which will mimic adjustments on the master. You can control them remotely from a console via onboard DMX. Additionally, the ballast has a USB input for firmware updates, and this version of the ballast has a battery plate to power the light from V-Mount batteries when mains current is unavailable.