These connect to an LX3302A inductive sensor IC, which reads the position of the copper slug inside the float. That simplifies the process greatly; [Mark] goes into great detail about the design ...

They also noted that the reported battery level ... Water Leak Sensor works by having two small metal sensors on the bottom ...

The washer fluid level sensor in my 2018 Ram 1500 has failed for the second time since I’ve owned the truck. The first one was replaced under warranty, and now the new one has gone bad.

Like swimming pools, hot tubs need regular monitoring to ensure their water stays clean and clear. An average person might take a water quality reading once or twice a week using test strips ...