1/2 Inch Water Flow Sensor – YF-S201

1/2 Inch Water Flow Sensor – YF-S201

The YF-S201 Water Flow Sensor is a compact and reliable flow measurement sensor designed to monitor the flow rate of water in pipes and fluid systems. It uses a built-in Hall effect sensor and rotating turbine mechanism to generate pulse signals based on the water flow, allowing accurate flow measurement using microcontrollers like Arduino, ESP32, or Raspberry Pi.

As water passes through the sensor, the internal rotor spins and the Hall effect sensor converts this motion into digital pulse signals. These pulses can be counted to determine flow rate and total water usage, making the sensor ideal for smart water monitoring systems and automation projects.

The YF-S201 is easy to install and supports a wide operating voltage range, making it suitable for home automation, irrigation systems, water dispensers, and industrial monitoring applications.

Features

• Accurate water flow measurement using Hall effect sensing
• Lightweight and compact design
• Durable internal impeller shaft
• Supports hot, cold, and normal water flow
• Easy interface with Arduino and other microcontrollers
• Leak-resistant sealing structure
• Simple installation with 1/2 inch pipe connection

Specifications

• Model: YF-S201
• Sensor Type: Hall Effect Water Flow Sensor
• Operating Voltage: 5V – 18V DC
• Flow Rate Range: 1 to 30 Liters/Minute
• Maximum Water Pressure: 2.0 MPa
• Pulses Per Liter: 450
• Frequency Formula: 7.5 × Flow Rate (L/min)
• Output Signal: PWM Pulse Output
• Pipe Compatibility: 1/2 Inch
• Dimensions: 2.5″ × 1.4″ × 1.4″
• Weight: 25g

Wire Connections

• Red Wire: VCC (+5V to 18V)
• Black Wire: GND
• Yellow Wire: Pulse Signal Output

Applications

• Water monitoring systems
• Smart irrigation projects
• Automatic water dispensers
• Industrial flow measurement
• Home automation projects
• Liquid dispensing systems

Package Includes

• 1 × YF-S201 Water Flow Sensor

Note: Product images are for reference purposes only.