Purpose of Inspection Panel?

What is the purpose of the Inspection Panel on the bottom of the wing, front of the spar and first panel outboard from the fuel tank. I received the parts to put it in, but I can't find the purpose. I removed the fuel tank to see if there was something there that needed to be accessed. Nothing there. This is relative to a quick build wing. Thanks for the help.

If it’s the one I’m visualizing, a lot of buildes use it to access/install a pitot tube.

I believe that is where the stall buzzer would be mounted.

What William said. It's the access to the stock stall warning mechanism.