![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/2hrH2.jpg)
pcb - How does the Brita water filter pitcher "change filter" indicator work? What is that gold cylinder? - Electrical Engineering Stack Exchange
![Amazon.com: Brita Elite Water Filter, Advanced Carbon Core Technology Reduces 99% of Lead, Replacement Filter for Pitcher and Dispensers, Made Without BPA, 1 Count (Package May Vary): Home & Kitchen Amazon.com: Brita Elite Water Filter, Advanced Carbon Core Technology Reduces 99% of Lead, Replacement Filter for Pitcher and Dispensers, Made Without BPA, 1 Count (Package May Vary): Home & Kitchen](https://m.media-amazon.com/images/I/81SybOi2FwL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Brita Elite Water Filter, Advanced Carbon Core Technology Reduces 99% of Lead, Replacement Filter for Pitcher and Dispensers, Made Without BPA, 1 Count (Package May Vary): Home & Kitchen
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