Application Wiring

In the following diagrams there are two sections:

  • Internal
  • External

Internal section reflects a simplified version of the on-board circuit. The External section reflects the wiring that the user can build.

Digital Inputs

Bi-directional Opto-coupler Input

Sink Type


Source Type



Digital Outputs

Relay Outputs

The LOAD element in the following diagrams can be a motor, a light bulb, a heating element or something else.

DC source



The DC Source polarity doesn’t matter from the Relay Output point of view, it can matter for your load. The positions of the LOAD and DC Source can be interchanged.

AC source



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