The R2 Moonlight Controller allows the user to set there R2 Moonlight to automatically change brightness according to the phases of the moon! A manual mode and fixed mode are also possible. The R2 Moonlight Controller works with any of the R2 Moonlights to create the most complete moonlighting solution available! Specifications Works with all R2 Moonlights Intelligent CPU based Design 8 Ft Pass through Cable Included Three Great Modes *Only works with the R2 Moonlights, uses the power supply included with the R2 Moonlights