Gavita Master Controller EL2GAVITA MASTER CONTROLLER EL1 & EL2 The Gavita Master Controller has been developed to give you complete automated control over all Gavita E Series lighting systems. These little black boxes have the ability to control up to 40 lights with the EL1 and 80 lights across 2 separate rooms with the EL2. You can also say goodbye to setting up multiple timers and contactors to switch the lights on or off as the Master Controller will allow you to control all