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Check the listing for details. 8 Channel Digital Quantity Input Module Digital Switch RS485 Acquisition Board. Condition: New. Listed at 9.10 USD. 8 Channel Digital Quantity Input Module Digital Switch RS485 Acquisition Board TTL LvTTL CMOS IO for PLC Expand Relay Industrial. Digital to RS485. 1x S485 Acquisition Board. There are two input modes: low-level input (default) and high-level input.
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