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https://digipres.club/system/media_attachments/files/111/428/931/669/232/869/original/ed8114fc1cab5a02.png
Here's that little PCB.
one wire is labeled +Pzo, suggesting this is a Piezo Switch.
That makes sense! Piezo switches are known for being very reliable, especially when they need to be vandal-proof.
There's basically no moving parts here, just a piece of metal that flexes a bit and a magnet that sways back and forth. There's very little to break.
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