Liquid flow sensor FS300A 60l/min - thread 3/4 ''

Index: SES-08895 EAN: 5904422366186

Sensor of liquid flow operating in the range from 0 to 60 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 FS300A 60l/min - thread 3/4 ''
€8.05 tax excl.
Waiting time: 4-6 weeks
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Manufacturer: OEM


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 the user's guide.



  • Supply voltage: 5 V to 24 V
  • Power consumption for 5 V: 15 mA
  • Measuring range: from 1 to 60 l/min
  • Operating temperature: to 80 °C
  • Permissible humidity: 35 % - 90% RH
  • Permissible water pressure: 1.2 MPa
  • Mounting on a pipe with a diameter of 3/4"
  • Material: plastic
  • Dimensions: 66 x 42 x 38 mm

Test 3
Package width 9.5 cm
Package height 15.5 cm
Package depth 5 cm
Package weight 0.067 kg

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Product reviews

Liquid flow sensor FS300A 60l/min - thread 3/4 ''


Average grade


Customers opinion
The following opinions are collected
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and come from the post-purchase process.
marco 10.02.2023 Confirmed purchase
Optimal quality (the hall sensor already works at 3.3 volts), standard look, usability ... we'll see ... internally it has a bottleneck which (perhaps) compromises the range expected from a 3/4" connection.
Paweł S. 15.02.2022 Confirmed purchase Translated review
The transaction was made quickly and professionally. Product as described.
Hans 12.02.2024 Confirmed purchase

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