The package is easy to explain:
- Housing consisting of base and upper part
- Rubber feet for sticking
- Mini-screws
It has outlets for the Pi-Camera as well as an extra monitor for internal connectors. The 40 pins of the GPIOs can lead out laterally via a ribbon cable.
The round hole in the lid is still not entirely clear to me, I suspect that you can mount the camera in the housing, and then the lens is looking through the hole to the outside. But then you also need 2 of the four screws to the inside to tighten in the pre-recording.
At the bottom are still gaps to be able to the PI hang on the wall (the USB and LAN while looking down).
The recesses for the status LEDs on the board, I find quite handy. The design is not great, nice simple and functional.