The York S1-SE-CUA1001 Universal Converter Adapter Kit is a thermostat interface accessory designed to support the connection of compatible commercial thermostats to select York HVAC systems. It facilitates communication between the thermostat and the equipment’s control system, helping ensure proper operation when compatible components are installed. This adapter kit is used with sup... https://www.partshnc.com/s1-se-cua1001-york-adapterkit-universal-converter-to-commercial-thermostat