Hey guys, I've been using these little temperature control switch buttons from Alibaba for my hobby project and they work great, but I'm curious as to what exactly is inside of them. I'd love to be able to replicate this circuit and potentially design my own PCB and silicone rubber button in the future. Any info regarding this item would be greatly appreciated, like for example what the main components are, how it works, links to tutorials/guides, etc. I took one out of the rubber casing to see if I could identify the components, but a simple Google search of the characters didn't reveal anything interesting.
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