Tried and true design with over-sized solid state relays and rugged breakers. Equipped with rigging, hoisting points. Simple addressing with no menus. Dim/non-dim option with dip switch selections and bump buttons. Stackable design. All RatPac dimmers are ETL/CSA listed, and now include CRMX technology, allowing you control up to a quarter mile range within line of sight. Transmit or receive with the flip of a switch.