What is this thing?

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mykl@lemmy.world

[Solved] About 4cm, powered by CR2477 batteries (infosec.pub)

submitted 4 days ago* (last edited 4 days ago) by 01189998819991197253@infosec.pub to c/whatisthisthing@lemmy.world

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[Solvex: EcoBee Smart Sensor]

About 4cm, powered by CR2477 batteries.

Edit. Found another one, and this one had the top off.

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[–] homik@slrpnk.net 3 points 4 days ago

I'd say the central component in the opened pic is a https://en.wikipedia.org/wiki/Pyroelectricity (PIR) sensor. Often used for detecting motion, but some models at least can do more.