Fuji Electric OPC-PRT3 Multi-Protocol Ethernet Option Card, Ethernet/IP, Modbus/TCP, BACnet/IP, PROFINET IO and AB CSP Industrial Ethernet Connectivity for Fuji FRENIC-MEGA, FRENIC-HVAC, FRENIC-HVAC-P, FRENIC-AQUA, and FRENIC-Ace $363.83 Select