WATER FLOW SENSOR 0.5 INCH

YF-S201 ½-inch Hall effect water flow sensor. Turbine rotor spins as water flows; Hall sensor outputs proportional pulse signal. Compatible with hot, cold, clean, or dirty water. Sealed ring structure prevents leaks. Works with Arduino, Raspberry Pi, and any 5–18V MCU.

Pin Connection:

• Red — +5V
• Black — GND
• Yellow — PWM pulse output

Specifications:

• Model: YF-S201
• Sensor: Hall effect
• Working Voltage: 5–18V DC
• Flow Range: 1–30 L/min
• Pulses per Litre: 450
• Frequency: 7.5 × Flow rate (L/min) Hz
• Max Pressure: 2.0 MPa
• Pipe Compatibility: ½” nominal (0.78” OD, ½” thread)

Applications:

• Water heating and dispensing systems
• Automatic irrigation and flow metering
• Arduino water flow measurement projects