@tlfong01 Those relays have a control to toggle the NO/NC, but obviously the problem is the same. I have a basic understanding of AC, of course. The problem is that I don't know how to make the pi to have by default an OUT pin set to LOW. I think that would solve the problem.

@IonicăBizău Your Idea of "Toggling NO/NC" is PLAIN WRONG. Have a nice day. Cheers.

Why?

@IonicăBizău I repeat: you MUST NOT USE NC.

@tlfong01 Checking now using NO

Yes, that worked! <3 Thank you very much. You can post an answer.

Thank you so much.

@IonicăBizău Thank you for your kindness. However, I must decline your nice offer, because I find it difficult to give a satisfactory answer. I usually recommend the OP himself to give the answer, because he knows why he has the problem, and how he arrives at the answer, and perhaps any lessons learned, and because that would be most helpful to other newbie visitors.