Gravity: Analog Liquid Level Sensor (FS-IR02)

Index: DFR-06612 EAN: 5903351243391

Photoelectric liquid's level sensor. It has high sensitivity without the need to use the mechanical parts. The probe withstands high temperature and high pressure.

Gravity: Analog Liquid Level Sensor (FS-IR02)
€6.91 tax excl.
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Manufacturer: DFRobot
Compatibility: Arduino


Photoelectric liquid's level sensor. It has high sensitivity without the need to use the mechanical parts. The probe withstands high temperature and high pressure. It works withthe Arduino modules. The kit includes a cable adapted to Gravity DFRobot IO Expansion Shield.

DFRobot Gravity - czujnik poziomu cieczy FS-IR02 - fotoelektryczny, cyfrowy

The product is compatible with Arduino

Sample code and detailed information can be found inthe user guide.


The module works with any microcontroller with digital inputs, includingArduino. To read data, simply connect the power supply and output pin to any input of the microcontroller, and read its status.


Example of connecting the sensor withArduino.


Do not install the probe near the bright lights, or directly in sunlight, as it will lead to interference.


  • Model: FS-IR02
  • Type: photoelectric liquid level sensor
  • Supply voltage: 5 V
  • Output current: 12 mA
  • Operating temperature: -25°C to 105°C
  • Output of the low status: less than 0.1 V
  • Output of the high status: 4.6 V
  • The accuracy of liquid's level measurement: +/- 0.5 mm
  • Material: polycarbonate
  • Range of measuring: no restrictions
  • Cable length: 450 mm
  • Communications: digital signal 0/1
  • Cable for connection with Gravity DFRobot IO Expansion Shield
  • The dimensions of the board: 28 x 28 mm

Set includes:

  • The main module
  • Probe
  • Connecting cable


Package width 11 cm
Package height 2.6 cm
Package depth 9 cm
Package weight 0.03 kg

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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Product reviews

Gravity: Analog Liquid Level Sensor (FS-IR02)


Average grade


Customers opinion
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Jürgen 19.03.2023 Confirmed purchase
Krzysztof 07.03.2023 Confirmed purchase Translated review
quickly efficiently
Bogdan C. 29.04.2022 Confirmed purchase Translated review
very good
Andrzej Z. 25.10.2021 Confirmed purchase Translated review
Good product

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