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12V 8ch RS232 IO Control Switch Relay PLC expansion board DB9 Serial port PC Com
- Item No : 233444048813
- Condition : New
- Brand : eletechsup
- Seller : bluesky201203
- Current Bid : US $4.95
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* Item Description
- 3: Two serial ports: RS232 DB9 interface, TTL 232 interface. With RS232 DB9 interface and TTL 232 interface. Automated industry PLC. 6 Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized, no need to switch.
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