Nold Open is fully compatible with FAAC 640. To learn more about installation, please visit our knowledge base, where you can find more details about what you need and how to setup Nold Open.
The second output controls the pedestrian open function of your opener. You can setup this as a new key in the Nold app, and you can share access to each output separately.
Click here to search for a pdf manual for this opener.
Please keep in mind that the order of the wires doesn’t matter, every input and output is polarity free.