PRODUCTS > RS-232 to RS-422/485 > SER-COMi-SI-M


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SER-COMi-SI-M - 1-Port RS-232 to RS-422/485 Adapter with Metal Case and Optical Isolation


  • Converts an RS-232 port to a high speed RS-422/485 port
  • 2000V DC optical isolation for all signals
  • DCE/DTE pin assignment can be selected
  • SECC metal chassis with DIN rail bracket
  • LEDs indicate TxD and RxD for easy port monitoring and diagnosis
  • Automatic transmit and receive control for 2-wire RS-485 half-duplex mode
  • Built-in termination and biasing
  • Serial port protected with surge protection of 25kV
  • High speed serial port with baud rate up to 921.6kbps


Serial Interface
Input RS-232
Output RS-422/485
Number of Ports 1
Connector Input: DB9
Output: DB9 and 5-pin terminal block
Max. Speed 921.6kbps for transmit & receive
RS-422 Signals TxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+, CTS-
RS-485 Signals (4 wire) TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (2 wire) Data-, Data+, GND
Protection 25kV ESD protection for all signals
2000V DC optical isolation for all signals
Power Input DC 12V, 1A external power adapter
Casing SECC metal chassis with DIN rail bracket
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 75°C (-4°F to 167°F)
Operating Humidity 5% to 95% RH
Safety Approvals CE, FCC