If you set up the Opener as connected to “other door” instead of an intercom it can switch a contact (up to 50V/2A). When performing the unlock command, the contact will be shortened for 3s (configurable) and afterwards opened again. Auto-Unlock, Keypad, Fob works the same as with the Smart Lock.
What you can not do, is to lock the door or see its status (Status is always just online or offline). If you have a motorized lock set up to “automatically lock when closed”, most of this shortcomings are irrelevant in practical use as the door will be closed and locked all the time anyways.
Technically yes, but from a software standpoint no. The Openers digital output is only used for communication with bus based intercom systems.
Btw. the Nuki Smart Door https://nuki.io/de/inside/ is our solution for integrated cylinders, but it’s not available yet in Germany.