Rainbird FG100 Wired Flow Sensor The Rainbird FG100 flow sensor measures the water flow through your irrigation lines and sends it to your compatible Rainbird controller allowing you to precisely and reliably calculate flow rate. Designed for outdoor and underground applications the flow sensor allows you to get on top of leaks early by monitoring for low or excessive water flow. Features Flo-Watch™ - Your compatible ESP-ME3 controller learns the flow rate and warns you when it is low or excessive. No specialty PE-cable: Easily install the FG100 with a standard 18g irrigation wire. Threaded or slip unions: Threaded or slip unions allow for faster installation and easy maintenance. Rain Bird App: Pair the FG100 with the ESP-ME3 Controller to check system health from anywhere, and control advanced flow settings via the Rain Bird Specifications 1" / 25.4 mm inlet/outlet NPT/BSP/Slip Plastic body Paddle wheel impeller with ceramic shaft for heat dissipation Minimum Flow: 3 GPM / 11.35 LPM Maximum Recommended Flow: 25 GPM / 94.63 LPM Maximum Flow: 35 GPM / 132.49 LPM Requires LNK Wifi2