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1/8 inch Water Flow Sensor - YF-S201 (HIGH RELIABILITY)


Water Flow Sensor

  • Working Voltage : 5 to 18V DC (min tested working voltage 4.5V).
  • Max current draw : 15mA @ 5V.
  • Working Flow Rate : 1 to 30 Liters/Minute.
  • Maximum water pressure : 2.0 MPa.
  • Flow rate pulse characteristics : Frequency (Hz) = 7.5 * Flow rate (L/min).

279.00 236.44+18% GST

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SKU 04AA024 Categories ,

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Water Flow Sensor

A 1/8 inch Water flow sensor YF-S201 consists of a plastic valve body, a water rotor, and a hall effect sensor – when water flows through, the internal rotator will change its speed with different rate of flow and hall effect sensor outputs the corresponding pulse signal. Use laser cutters or CNC to measure if and how much water is flowing through the laser tube or CNC spindle for cooling.


  • The simple and compact module.
  • Easy to Install.
  • High Sealing Performance.
  • High-Quality Hall Effect Sensor.

Package Includes :

1 x Flow sensor 1/8 inch


Learn how to interface a Flow sensor 1/8 inch with an Arduino.

Click here to download the datasheet of  Flow sensor 1/8 inch.


Model YS-S201
Maximum Working Current 15mA @ 5V DC
Flow Rate Range 0.3~6L/min
Connection 6mm (external diameter)
Inlet Water Pipe Diameter 2.5-4mm
Load Capacity 10mA (DC 5V)
Operating Temperature 80 degrees
Liquid Temperature 120 degrees
Operating Humidity 35% – 90%RH
Water Pressure 2.0MPa
Storage Temperature -25 to + 80 degrees
Storage Humidity 25%-95%RH


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