Bundle a Rachio 3 with an EveryDrop wired flow meter to provide highly accurate, real-time water use monitoring and automated leak detection right in your Rachio app! Plus, you can save $20 when you buy the bundle. The flow meter installs in-line on a standard 1-inch water supply line after a back-flow preventer. That means that you have to cut pipe in order to install, so we recommend you consider calling a professional to install your flow meter.