YF-S201 Water Flow Sensor


Out of stock

SKU: SNR44 Category:


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.

The pulse signal is a simple square wave so its quite easy to log and convert into liters per minute using the following formula:
Pulse frequency (Hz) / 7.5 = flow rate in L/min.

Features :
The simple and compact module.
Easy to Install.
High Sealing Performance.
High-Quality Hall Effect Sensor.
RoHS Compliant


Specification: (Approximate)
Water Pressure < 1.75MPa
Working Voltage (V) 5 ~ 24
Max current draw 15mA @ 5V
Working Flow Rate (Liters/Minute) 1 ~ 30
Operating Temperature range (?) -25 ~ +80
Operating Humidity Range 35% ? 80% RH
Output rise time (?sec) 0.04
Pulses per Liter 450
Output fall time (?sec) 0.18
Outer diameter (mm) 20
Intake diameter (mm) 11
Outlet diameter (mm) 11
Length (mm) 62.5
Width (mm) 36
Height (mm) 35
Weight (gm) 50
Weight 0.145 kg
Dimensions 9 ? 6 ? 6 cm

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

Water heaters
water vending machine
flow measurement device

Additional information

Weight 0.01 kg


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