N-series distributed I/O modules support Modbus TCP, EtherCAT, EtherNet/IP & OPC UA via BL210/BL211/BL212/BL214 couplers. Digital, analog, RTD & TC signals. Up to 32 modules per coupler. Plug-in spring terminals for module replacement without rewiring. Industrial-grade, -40°C~+70°C. Ideal for smart manufacturing, motion control & process monitoring.