DFRobot Gravity Electrochemical Oxygen Sensor (0-100%Vol) – I2C


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SKU: 1356240
  1. Brand: DFRobot
  2. Product: Electrochemical Oxygen Sensor (0-100%Vol) – I2C
  3. Physical Quantity Detected: Oxygen concentration
  4. Measuring Range: 0~100%
  5. Working Voltage: 3.3~5.5V DC


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Brand: DF Robot
Category: Gas and Dust Sensor

This full-scale oxygen sensor employs the original AO2 CiTiceL oxygen sensor probe and features a measurement range of 0-100%Vol and I2C digital output, which can be adapted to application scenarios including oxygen generators, automobile exhaust, and air-fuel ratio detection.

The DFRobot oxygen sensor has a built-in calibration algorithm on the signal board that can quickly perform single-point or double-point calibration so as to accurately measure the oxygen concentration in the environment. Based on the principle of electrochemistry, the sensor probe comes with strong anti-interference ability, high stability and sensitivity, and up to two years of service life. It is compatible with mainstream controllers such as Arduino, ESP32, Raspberry Pi, etc. Besides, the sensor is designed with an easy-to-use Gravity interface, and with our sample codes, you can quickly build an oxygen detector.

Useful link:

DFRobot Gravity Electrochemical Oxygen Sensor (0-100%Vol) -I2C tutorial.



  1. Strong anti-interference ability
  2. High stability and sensitivity
  3. Compatible with Arduino, ESP32, Raspberry Pi

Package Includes:

1 x DFRobot Gravity Electrochemical Oxygen Sensor (0-100%Vol) – I2C

SKU: 1356240 Category:
Working Voltage

3.3~5.5V DC

Output Signal

I2C, UART (0~3V), analog voltage


>2 years (in air)

Working Humidity Range

0-99% RH (non-condensing)

Operating Temperature (°C)

-20°C ~ +50°C

Product Dimensions

32mm x 27mm/1.26 x 1.06 inch

Response Time ( μS)


Mounting Holes Diameter (mm)

inner diameter 3.1mm(0.12 inch)/outer diameter 6mm(0.24 inch)

Shipping Weight 0.115 kg
Shipping Dimensions 13 × 9 × 5 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China