Gavita Master Controller EL3 Grow Light ControllerThe Gavita EL3 is the next generation in our EL controller series Designed to maximize the performance of your compatible fixtures. An 8 inch touchscreen interface provides a clear and colorful display. With this unit, you can control up to 512 fixtures across two zones, making it possible to customize settings for different rooms or growth phases. The EL3 enables you to set sunrise sunset dimming, high temperature dimming, and high temperature shut