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MOXA A53-DB9F product description:

Moxa's serial-to-serial media converters can convert between RS-232, RS-422, and RS-485, which avoids compatibility issues that are often encountered when communicating between different serial interfaces.

Connector: 10-pin RJ45

Flow Control: RTS/CTS

Isolation: 2 kV

No. of Ports: 2

RS-485 Data Direction Control: ADDC (automatic data direction control)

Serial Standards: RS-232 RS-422 RS-485