Electrical doorlock

I have an electrical doorlock connected to a relay of a velbus domotica system.
I’ve added a switch in Habpanel to activate/ deactivate the relay. Problem is that if the switch stays “on” the door remains unlocked.
I’d like to use a momentary button instead of a switch in order to only open the door when the button is pressed.
I added a button in habpanel but am stuck with the settings, thank you for your help.

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