Liquid flow sensor YF-S402 6l/min - M11x1.25 thread

Index: SEE-04411 EAN: 5904422373900

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

Liquid flow sensor YF-S402 6l/min - M11x1.25 thread
€9.35 tax excl.
Waiting time: 4-6 weeks
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Manufacturer: Seeedstudio
Compatibility: Arduino


  • Supply voltage: 5 V to 24 V
  • Power consumption for 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
  • The number of pulses per litre: 73
  • Mounting on a pipe with a diameter of M11x1.25
  • Material: plastic
  • Dimensions: 58 x 34.9 x 26.7 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 24 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 provides a sample program for Arduino with connection diagram. The project is available in theuser's guide.


Package width 8 cm
Package height 2.7 cm
Package depth 10.5 cm
Package weight 0.035 kg

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