B-Lite Master Zone Controller is the most user friendly and versatile lighting controller on the market! With a touch screen interactive display, setup and modifications to your grow schedules have never been easier! The B-Lite Master Zone Controller features two control groups allowing you to run two rooms side-by-side and stagger your overall energy usage. The B-Lite Master Zone Controller can manage up to 100 total ballasts (50 per control group) and is capable of simulating natural sunrise and sunset periods for your plants. The B-Lite Master Zone Controller is compact, easy-to-install, and ready to run your grow!