I agree. It was very poor project planning. The multiple radio modules doesn't make sense for starters and in fact all but laser could easily be built into the

I agree. It was very poor project planning. The multiple radio modules doesn't make sense for starters and in fact all but laser could easily be built into the current design for little cost (PIR, Light intensity, sound intensity). As for the mold (and this is just an exercise at this point) I considered that the window would just be built into the mold and would be parallel to the parting line. The buttons could easily be cap sense buttons, and not membrane. It would only need an inexpensive pad printing operation, which they're doing anyways for branding.