Modbus I/O Module, Modbus PLC Controller, Serial Server for Industrial manufacturer / supplier in China, offering Serial Server Serial to Ethernet Converter with RS-232/422/485 to Ethernet Converter (ATC-1200), Digital Io Module with 8di/8do Modbus RTU +RS485 Interface (A-1055S), TCP/IP Ethernet to RS485 Converter (ATC-3000) and so on.
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