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1.1 Product Introduction The SM701-A(B) intelligent multiplexer is a product developed using an ARM microprocessor, specialized chips, as well as extensive practical experience. It is designed in accordance with the requirements for industrial products, featuring high reliability and stability. The intelligent converter is equipped with 2 standard RS485 interfaces. Since the SM701-A(B) intelligent multiplexer is designed specifically for industrial integration, it features special designs in terms of temperature range, vibration resistance, electromagnetic compatibility, and interface diversity, ensuring stable operation in harsh environments and providing high-quality performance for your equipment. 1.2 Product Performance ● It can convert one RS485 or RS232 interface into 2 RS485 interfaces. ● It supports transmission via both standard and non-standard MODBUS_RTU protocols. ● It is equipped with standard RS485 or RS232 interfaces, allowing communication with computers or servers. ● Supports multiple collectors or PCs. ● The communication parameters such as baud rate, parity bits, and stop bits can be set according to the actual RS485 or RS232 instruments connected. ● It has a power-off memory function, so no need to reset parameters after a power outage. 1.3 Main parameters ● Case dimensions: Length 96 mm × Width 80 mm × Height 25 mm. ● Operating environment temperature: -20°C to +80°C. ● Relative humidity: 10%–80%. ● Power supply input voltage: DC 12～24V; the ripple of the power supply shall not exceed 200mA, and it must be able to provide 100mA. 1.4 Wiring diagram 1.5 Product application diagram