![Amazon.com: Brita Large Water Filter Pitcher for Tap and Drinking Water with SmartLight Filter Change Indicator + 1 Standard Filter, Lasts 2 Months, 10-Cup Capacity, Black: Home & Kitchen Amazon.com: Brita Large Water Filter Pitcher for Tap and Drinking Water with SmartLight Filter Change Indicator + 1 Standard Filter, Lasts 2 Months, 10-Cup Capacity, Black: Home & Kitchen](https://m.media-amazon.com/images/I/71EivW+4tFL.jpg)
Amazon.com: Brita Large Water Filter Pitcher for Tap and Drinking Water with SmartLight Filter Change Indicator + 1 Standard Filter, Lasts 2 Months, 10-Cup Capacity, Black: Home & Kitchen
![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
![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)