Liquid flow sensor YF-S402 6l / min - 1/8" thread

Index: SEE-04410 EAN: 5904422366018

Sensor of liquid flow operating in the range from 0.3 to 6 liters per minute. Is supplied with the voltage from 3,5 V to 24 V, the output signal is a frequency proportional to the measured value.

Liquid flow sensor YF-S402 6l / min - 1/8" thread
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Manufacturer: OEM


  • Supply voltage: 3,5 V to 24 V
  • Power consumption for 3,5 V: 15 mA
  • Measuring range: from 0.3 to 6 l/min
  • Operating temperature: to 80 °C
  • Permissible humidity: 35 % - 90% RH
  • Permissible water pressure: 0.8 MPa
  • Mounting on a pipe with a diameter of 1/8 "
  • Material: plastic
  • Dimensions: 58 x 34.9 x 28.2 mm



A simple sensor for measuring the flow of liquids. Consists of a pinwheel that has a magnet and Hall sensors. By counting the pulses of a hanging fan, in a simple way, you can measure the flow of liquids. With this method, the electronic part of the sensor has no contact with water.


The device has three wires:

  • red - supply voltage from 5 V to 12 V
  • black - ground
  • yellow - pulse output signal


By counting pulses you can track the fluid flow in a simple way. It should be noted that this is not a sensor for precision measurements. However, it is ideal for use in hobbies that do not require greater accuracy than 10 %.

The product is compatible with Arduino

The manufacturer has prepared aguidefor users of Arduino.


Package width 7 cm
Package height 2 cm
Package depth 10 cm
Package weight 0.031 kg

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Liquid flow sensor YF-S402 6l / min - 1/8" thread


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Dariusz 07.03.2023 Confirmed purchase Translated review
All OK
Pawel W. 13.01.2022 Confirmed purchase Translated review
no comments
Maciej 04.04.2023 Confirmed purchase

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