Hello
Usefull docs :
My post
Le how-to of nuki opener (read chap “analog intercoms”) for installation and configuration, chap “3” for the meaning of each wire of the nuki opener
https://support.nuki.io/hc/article_attachments/4417715168401/howtoguide_opener_EN.pdf
Install guide of the Urmet 1133 for well understanding, well configuring, well connecting, checking the connections. How to send you the pdf guide ?
I recommend for proper connection using this connectors
https://www.leroymerlin.fr/produits/connecteur-wago-3-voies-90079581.html
You need 3 and 5 wires types.