A compact threewire water flow sensor designed for small appliances and beverage equipment. It uses Red for power in, Yellow for output signal, and Black for ground. Built to endure heat, pressure, and cold, it fits tight spaces and is easy to install. Operating range is 130 L/min with a pressure rating up to 1.75 MPa. Key features Wiring: Red power in, Yellow output, Black ground Compact, stable design for tight installations Durable against temperature, pressure, and cold conditions Flow range: 130 L/min; pressure up to 1.75 MPa Compatibility Suitable for water heater systems, water dispensers, and vending machines Works in smallscale water systems and purification setups Use scenarios Install in a domestic or hotel water heater to monitor and control flow Use in an office or home water dispenser to provide a signal to the controller Integrate into a beverage vending machine to regulate water supply and trigger actions This device delivers practical, reliable flow sensing with straightforward wiring and a compact form factor, designed to support common waterusing equipment without extra bulk.