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The Dtech IOT9031 is an industrial-grade Modbus RTU gateway designed to convert RS232/422/485 serial data to TCP/IP Ethernet. It supports multiple working modes, such as TCP Client, TCP Server, UDP Client, and UDP Server, ensuring two-way transparent data transmission. This device is ideal for industrial automation systems, access control, and monitoring systems. It features support for DHCP, a baud rate of up to 115200bps, and robust protection against electrostatic discharge. The IOT9031 can connect up to 256 devices in RS485 mode.