Gavita Pro Line E-Series 6/750 DEGavita Pro Line E Series 6 750 DE 750w The e in e series stands for external control. These fixtures can be controlled centrally by a Gavita Master controller. This replaces the often cumbersome installation with contactors and clocks, and adds safety features such as automatic dimming of your lights at high temperatures and even a safety shutdown. We were the first to launch a double ended 1000W HPS lamp in this market, and we were also the first to