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High Versatility Parallel Port Breakout Board


The S3BRK2R1 High Flexibility Breakout Board is a fully isolated breakout board capable of up to 10 digital inputs, 8 relay driver outputs and 4 axis of step and direction outputs.

All digital inputs and relay outputs are fully optically isolated to protect the parallel ports of the computer used to drive the board.  Additionally,  there are two 5 VDC power supplies on the board, one supply interfaces with the parallel port to assure isolated power, and the other supply interfaces with the digital inputs, relay outputs.


  • Up to eight relay driver outputs to interface with DC relays
  • Up to ten digital inputs for limit switches, home
    switches, etc.
  • Two parallel port interfaces
  • Tested with Mach3 CNC software
  • Built in 5 VDC power supply to interface with stepper or servo drives

Please be advised that all orders are subject to availability. We will call you if shipping is more than 7 days.  Thank you for shopping online with Stepper3 LLC.

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