The RGE-Z1L6-7DS is a single-phase electronic fan speed controller supplied by Beijer Ref, sized for a maximum continuous current draw of 2.0 A. It regulates condenser or evaporator fan speed based on refrigerant pressure to maintain condensing temperature under variable ambient conditions with R410A. Applications include air-cooled condensers, split units, chillers, and refrigeration display cabinets requiring head-pressure control.