This is a cover for a WEMOS S3 board that we use to control our AC. The box is large enough for the board and an extra pull up that we need to adjust the voltage to make it work.
The box has 2 holes for both USB-C ports on the board and also a small hole to be able to get cables out from it to connect to the AC.
We intend to use 3M command strips or the like to attach the box to the AC.