With the Nuki App you can configure the button commands of your Fob. Select the Nuki device connected to the Fob in your Nuki App and open the device settings. You find the Fob settings under “Locking Permissions” > “Fob” > "Settings".
1x pressing: intelligent locking. This means unlocking or opening the door (knob), when the door is locked and locking, when the door is unlocked.