Omnipro 2 outputs and expansion enclosures

[cestor]

Is the only way to add additional outputs to the omnipro through 17A008 expansion enclosures?

 

[picta]

Yes
 
In official way. You can always add some non-HAI device that has outputs, either via prolink, or using software controller.

 

[Desert_AIP]

You could use a UPB IO module, it has two output relays.