5 IN 1 32DI/32DO/16DI-16DO/8DI-24DO/24DI-8DO Modbus Rtu Digital 5V 3.3V TTL IO RS485 2.54mm Pin Core Board. 3 MODBUS RTU function codes: Write 05/06/15/16, Read 01/02/03. R4IOI16 is a 16-channel multi-function RS485 IO core board developed and produced by eletechsup.
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