Bestes, I have what seems to be about the same question. I have a remote property with water service and WiFi. I want to set up a Raspberry Pi 3 to (1) monitor water flow, (2) alert me when the flow exceeds some amount in some amount of time, (3) allow me to view the actual flow rate and (4) allow me to activate and close a water valve. The water flow device I have is a Hall Effect type sensor. I have not selected the water valve I plan to use. Can I meet the needs of my system using Cayenne? Thanks for your help.