Use button to just join to WIFI and then turn off, is it possible?

My Dash buttons finally are dying and I want to replace them with Seeed’s.
I don’t want to setup aws account for that and I don’t even want to let the buttons out of my home network.
All I want is for them to join to my wifi and by doing so trigger an event.
After that they just need to turn back off.

Is that possible?

Thats how I used dash buttons until now.

I think so. You can log in the same aws account when you first started