TRP-C08M  USB  to 4 RS-232/422/485 Isolated Converter


 TRP-C08M is a USB to RS232/422/485 Isolated Converter support 3KV isolation, built-in RS422/485 interface Surge Protection to ensure the stability of the transmitted data, suitable for applications in harsh industrial Environments.
TRP-C08M bridge using the latest USB chip that can set up a separate data format baud-rate and other self-defined baud-rate for each COM port it has the ability to automatically select RS232/422/485 Signal Through a simple wiring.
TRP-C08M Support two power input, USB Power or external input POWER SUPPLY, two types are available over-voltage protection.


  • USB-2.0 Device Controller.

  • Support 3KV isolation in RS232/RS422/485 interface.

  • Customer-specified Baud rates are also supported.

  • Each Port cans impendent set up the baud-rate and data format. 

  • On-Chip 512-Byte FIFO for upstream and downstream data transfers for serial Port.

  • Fully PLC support such as Mitsubishi Q,FX and FATEK serial….

  • Auto direction flow control on RS-485.

  • Auto baud rate switching from 75bps to 921.6 Kbps.

  • Auto switching RS232/422/485 interface.

  • 256 byte buffer for upstream and downstream data flow.

  • Direct power from USB port or external power.

  • Surge protection on RS422/485 data lines.

  • Power and TX/RX communication LED indicator.  

  • DIN rail or panel mount support.

  • Driver Support: Android/Win11/Win10/Win8.1/Vista64/32,Windows 98/ME/2000/XP/WIN 7/CE5.0~7.0 , and Linux, and Mac OS .


  • Input: USB 2.0.
  • RS232 signal: isolated 3KV 4 Pair16c450/16c550 compatible (TXD, RXD, RTS, CTS, ISO. GND)
  • RS422 signal: isolated 3KV 4 Pair Differential 4 full-duplex wires (TX+, RX+, TX-, RX-)
  • RS485 signal: isolated 3KV 4 Pair Differential 2 half-duplex wires (D+, D-).
  • Data Format: Asynchronous data with any combination of bits, parity, stop
  • Parity type: None, odd, even mark, space.
  • Data bit: 5, 6, 7, 8
  • Stop bits: 1, 1.5, 2.
  • Flow Control: Xon/Xoff, Hardware, None
  • Cable: USB 2.0 type A to type B cable.
  • Communication speed: 75~921Kbps. 
  • RS422/485 line protection: Against surge, short circuit,+/- 15KV ESD and voltage peak.
  • RS232 line protection: +/- 15KV ESD.
  • Distance: RS422/485 Up to 4000ft (1250M).
  • Connection type: Screw terminal for maximum AWG #12 ~ 30 wires.
  • Din-Rail mountable: Option.
  • Two power input: USB power or external Power.
  • Power consumption: 190mA by USB power.  
  • Operating environment: -10 to 60.
  • Storage temperature: -20 to 65.
  • Dimension: 151mm X 111mm X 26mm.
  • Weight: 691(W/Packing) .
  • Humidity: 10-90% non-condensing.


LI-USB2.0-A/B  (Option)

1.8M USB 2.0 A to B cable


Switching Adaptor

Input:100~240VAC 50/60Hz 260mA

Output: DC 12V/1A

Certificate: CE, FCC, UL, PSE

US Specification  

We also provide the EU / AUS / British specifications(MOQ:50PCS/2 Weeks)……more

DIN-RAIL-R (Option)

DIN rail mounting adapter (Option)