EveryDrop wireless flow meters provide highly accurate, real-time water use monitoring. Connect the flow interface to a Rachio sensor port for flow data in your Rachio app. (Not compatible with first-generation Rachio controllers.) Calibrate the flow meter to monitor water use for individual irrigation zones and trigger alerts for abnormal behavior. The device requires two AA batteries and 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.