All components
Button piece
Button assembly
It almost looks like a camera sensor in the middle?
Speaker
Main assembly (bottom view)
Has the main photoelectric sensor, a piezo, and many more that I probably don’t know of
Main assembly (top view)
Better view of the main smoke sensor (photoelectric)
Light sensor?
Electrical board (wired version)
Main “shell”
I’m pretty sure that’s a PIR motion sensor.
That makes sense, as the device detects motion for the night light feature
Thanks for making the Protect actually useful, heh.
How it would sense motion through a solid plastic button like that though?
That plastic button is likely opaque to visible light, but transparent to infrared light (like the glass top of an electric stove).
I believe it is, I could see light through it, but it appears mostly solid from just the look