The Schneider Electric (Viconics) VZ8250U5000B VAV Room Controller Series 8000 is a programmable room controller designed for precise zone temperature management in Variable Air Volume (VAV) HVAC systems. It monitors room conditions and regulates VAV box dampers to adjust airflow according to the required temperature setpoint. The controller is suitable for air-handling units, VAV roo... https://www.partshnc.com/vz8250u5000b-schneider-electric-viconics-vav-series8000-roomcontroller