System Sacom RS232C-RS422 Converter KS-10P RS232C⇔RS422 Conversion Unit (Built-in AC power supply circuit) 『Dsub9P⇔Dsub25P』 This is a full-duplex conversion unit that converts serial data output from RS232C to RS422 signal levels. Only the main unit and bracket are included. Power-on confirmation has been performed, but operational confirmation with cables connected has not been possible due to lack of an environment. No claims, no returns. Thank you for your understanding.