1.25-inch Stainless Steel Hall Water Flow Sensor Flowmeter — 3-120L/MIN±1% | 5-24VDC — For Water Heater, Farm Irrigation & Pools

Thread size: 1.25-inch. Flow range: 3-120L/MIN±1%. Operating voltage: 5-24VDC. Constructed entirely from stainless steel for reliable sealing and long service life; designed for straightforward installation. Internal construction includes a stainless steel body, a flow rotor assembly and a Hall-effect sensor to generate the output signal. Wiring: Red — in (Positive); Yellow — out (signal output); Black — GND (Negative). Suitable for a wide range of water-flow control uses including petrochemical applications, farmland irrigation, waterworks, residential flow monitoring, swimming pools, water conservancy projects, river thinning and other similar water management fields.