Gavita Master EL1 Gen 2 bulbs *Internet Connection Note: TrolMaster's main PLANT AMP is 100 *Internet Connection Note: TrolMaster's main controllers can be connected to the internet in order to use the available APP Supplementing your preferred nutrient program with Cal Mag™ Plus is strongly recommended when using reverse osmosis water and when growing in coco coir based medias to compensate for natural calcium draw The Gavita Master Controller EL1 and EL2 are entry level systems for centrally controlling large rooms with e series fixtures High temperature dimming and safety feature shut off Event logging Independent sunrise and sunset settings Independent light cycles and Programmable External Contactor Modules (ECMs) on the EL2