FTDI RX/TX Opto-Isolator

Simple Opto-Isolator board with only two channels to isolate RX and TX on UART communication lines. Both sides have FTDI style connectors but only GND, VCC and RX/TX are used. CTS and DTR are not connected. Also both sides need to have a separate power supply.


  • FTDI style headers on both sides
  • Two channels – one in each direction
  • Speed up to 9600bps
  • Both sides need a separate power supply



  • Bare PCB: 3€
  • Pre-assembled: 10€