B.Lite BLMC MASTER ZONE CONTROLLER. B-Lite Master Controller (BLMC) is the most user friendly and versatile lighting controller on the market. With touch screen interactive display, setup and modifications to your grow schedules will never be easier. There are also two groups on this controller allowing you to run two rooms side by side and stagger your energy usage. B-Lite Master Controller is compact, easy to install, durable, and ready to run your grow!