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OPN-UPC | BACnet Communications Card | Carrier Material_Lead Free Cast Brass The integrated check valve preventsCarrier OPN UPC BACnet Communications Card: Enhancing HVAC System Efficiency The Carrier OPN UPC BACnet Communications Card is an indispensable component for optimizing the performance and efficiency of your HVAC systems. This advanced card enables seamless integration with BACnet compliant building automation systems, providing real time monitoring, control, and data acquisition capabilities. Key Features: BACnet MS TP communication protocol for