Here is an interesting use case I thought that I would share. I have a very advanced smart home setup. Part of its responsibilities is to monitor for any water leaks.
But you quickly learn that no water leak solution is perfect.
So when I installed our whole house water filtration system last summer I couldn’t help but notice that the inline impeller caused the three lights on top to flash based on the amount of flow present (see red arrow in image below).
So I placed one of my old LaView cameras above it. The middle light blinks when the water is barely moving.
The impeller is sensitive enough to catch a leaky toilet.
The fridge ice maker causes the impeller to spin as well
I can log on anytime and see if there is water being used of any amount.
If you have lived through a water damage incident, then you know monitoring this can be a peaceful addition to your day