The topic may be trivial in a place like this, but you are my last resort - I bought a flat / floor of a tenement house. There is an intercom in the tenement house and I cannot ask the administrator to change his name on the intercom. However, I do not know how to open this intercom to get to the button labels - I do not want to damage anything. I need a special wrench for these screws or is there any way to do it?
Thanks in advance for your advice!

Thanks in advance for your advice!