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YF-S201 Water Flow Sensor 1–30 L/min White — image 1
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YF-S201 Water Flow Sensor 1–30 L/min White

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Flow Sensors for everyday users

The YF-S201 Water Flow Sensor 1–30 L/min White is a value-for-money flow sensors designed for everyday users. It features Max Water Flow(L/min): 1 to 30 and Working water pressure(MPa): ≤2.0.

₹740
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Total: ₹740
Buying tip: A smart budget buy — solid performance without breaking the bank.
Estimated delivery: 17 Aug31 Aug
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Quick Specs

Max Water Flow(L/min): 1 to 30
Working water pressure(MPa): ≤2.0
Operating Temperature (°C): -25 ~ +80
Operating humidity: 35% - 80% RH
Duty cycle: 50% ±10% output
Rise Time: 0.04µsec

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-12219Category: Flow Sensors

About This Product

The YF-S201 Water Flow Sensor 1–30 L/min White is a value-for-money flow sensors designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Max Water Flow(L/min): 1 to 30
  • Working water pressure(MPa): ≤2.0
  • Operating Temperature (°C): -25 ~ +80
  • Operating humidity: 35% - 80% RH
  • Duty cycle: 50% ±10% output
  • Rise Time: 0.04µsec
  • Pulse: 450/L
  • Cable Length: 15

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

This is YF-S201 Water Flow Measurement Sensor with 1-30Liter/min Flow Rate white sensor. This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There's an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.

By counting the pulses from the output of the sensor, you can easily calculate water flow. Each pulse is approximately 2.25 milliliters.

Note this isn't a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure, and sensor orientation. It will need careful calibration if better than 10% precision is required. However, it's great for basic measurement tasks!

We have an example Arduino sketch(check the ATTACHMENTS tab) that can be used to quickly test the sensor, it will calculate the approximate flow of water in liters/hour. The pulse signal is a simple square wave so it's quite easy to log and convert into liters per minute using the following formula.

Connection

Red wire: +5V. Black wire: GND. Yellow wire: PWM output.


Features :

  1. 1/2" nominal pipe connections, 0.78" outer diameter, 1/2" of thread.
  2. The simple and compact module.
  3. Easy to Install.
  4. High Sealing Performance.
  5. High-Quality Hall Effect Sensor.

Package Includes :

1 x YF-S201 Water Flow Measurement Sensor with 1-30Liter/min Flow Rate.

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Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.