While primarily listed as a door plug button

Industrial Durability: Forged brass construction and plated brass internal components prevent premature wear in high-cycle HVAC environments

000 automatic cycles

it effectively manages condenser fan cycling to maintain head pressure

York S1-RK-ECO1001-0D Controller 320074-702 While primarily listed as aThe York S1 RK ECO1001 0D is a dedicated ECONO Basic Model Controller engineered for precise atmospheric management in commercial HVAC systems. This original equipment manufacturer (OEM) component utilizes advanced microprocessor technology to drive energy conservation through automated outdoor air integration. Designed for seamless integration with York rooftop units, it operates on a standard 208 230V voltage range, ensuring stable performance