FortrezZ Flow Meter 3/4" NPT Z-Wave Plus, Cert ID: ZC10-16045038 Indicates if water is flowing immediately upon detection of water flow. Flow Meter information can be used as a trigger for a water leak alarms. Keeps the running total of gallons consumed. See your consumption report(s) Flow Meter indicates if it's a small flow (a toilet running) or a HIGH flow (example: garden hose left on) FOR USE WITH SmartThings HUB ONLY. If you have a different Z-wave HUB you plan on using, check with us first before ordering.