I have done it with the
Hamilton D.A.N. system and a programmable relay. Assuming you only have the HP motor on the second stack of the rotary switch (and assuming you have rotary switches) all you need to do is connect all the other outputs together and run the two wires into the relay. If you have three unused wires in your bundle, you could put the relay in the ER and run four bays off one relay. If your boxes are back-to-back, you could put the relay in one box and run two bays off one relay.
You'll have to open up the Cryptopay reader and add wires to the button (I've done this too, I just snipped the gray wires off the board and soldered them to the button terminals). I wrote the program so after five seconds of not receiving power it would pulse-close the output. We went from six or seven complaints a week to none, ever again.