Lighting control at your fingertips! The Master controller EL2 Gen2 is our entry-level system for centrally controlling large rooms with e-series fixtures. The second generation of Master controllers features improved and expanded functionality that raises the bar including non-volatile memory, event logging, independent sunrise and sunset settings and independent light cycles on the EL2. The EL2 has two lighting control channels and can control 1000 max repeater bus fixtures and 80 max single bus fixtures without a booster.