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pcb - How does the Brita water filter pitcher "change filter" indicator work? What is that gold cylinder? - Electrical Engineering Stack Exchange
![pcb - How does the Brita water filter pitcher "change filter" indicator work? What is that gold cylinder? - Electrical Engineering Stack Exchange pcb - How does the Brita water filter pitcher "change filter" indicator work? What is that gold cylinder? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/7MxyZ.png)
pcb - How does the Brita water filter pitcher "change filter" indicator work? What is that gold cylinder? - Electrical Engineering Stack Exchange
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