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


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.

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

Detection Gas Oxygen concentration
Detection range 0~100%
Working Pressure Range 0.5~2.0Bar
Working Voltage 3.3~5.5V DC
Output Signal I2C, UART (0~3V), analog voltage
Lifespan >2 years (in air)
Working Humidity Range 0-99% RH (non-condensing)
Working Temperature Range (°C) -20°C ~ +50°C
Product Dimensions 32mm x 27mm/1.26 x 1.06 inch
Response Time ( μS) <5S
Mounting Holes Diameter (mm) inner diameter 3.1mm(0.12 inch)/outer diameter 6mm(0.24 inch)


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