Yeah, that’s my understanding. I can’t find the post but it was here on this site. A guy did some experiments to find the smallest size hole his PIR sensor actually required. He tried 1mm, 2mm and 4mm(?). He said it worked just fine with a 2mm hole.

Nice design ! Good job

This is fantastic. Hope will come with full guide and instruction in each step.

I gave this module/ability my best exertion and fizzled. Post back in the event that you make it go.