OPC UA I/O Controller OPC UA I/O Controller BL205 was designed for IIOT applications, adopts embedded Linux system, supports customerized development applications, built-in logic programmable function module, is compatible with OPC UA Protocol. OPC UA I/O Controller BL205 supports dual network port cascade communication, and can support up to 32 IO modules, including AI, AO, DI, DO, RTD, TC, RS485, RS232, etc., OPC UA I/O Controller BL205 integrates data acquisition, automatic control, Logic program, customerized application, and edge computing, suitable for creating a high-speed, stable and reliable industrial IoT automation control system.