Gravity: AO2 Oxygen Concentration Sensor

SKU: SEN0496

Gravity: AO2 Oxygen Concentration Sensor uses the original AO2 CiTiceL® probe, with 0-100%Vol measurement range and I2C digital output. It has built-in calibration (single/double point) for accurate readings. Electrochemical-based, it offers strong anti-interference, high stability/sensitivity, and 2-year lifespan. Compatible with Arduino, ESP32, Raspberry Pi, it features a Gravity interface and sample codes for quick detector building. Applications include oxygen generators, automobile exhaust, air-fuel ratio detection. Caution: Avoid high solvent vapor exposure (storage, fitting, operation).

Overhead shot of red push button switch and electronic module with microcontroller for electrochemical O2 sensor.-DFRobot product sku:SEN0496 image.
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  • Tech Specs
  • Specification

    Physical Quantity Details
    Detected physical quantity oxygen / O2 concentration
    Measuring range 0~100%
    Working voltage 3.3~5.5V DC
    Operating Current 6.5mA @ 5V;6.5mA @ 3.3V
    Output signal I2C
    Working pressure range 0.5~2.0Bar
    Operating temperature range -20°C ~ +50°C
    Operating humidity range 0 - 99% RH (non-condensing)
    Response time <5S
    Life >2 years (in air)
    Circuit board size 32mm27mm (1.261.06 inch)
    Mounting hole size inner diameter 3.1mm(0.12 inch)/outer diameter 6mm(0.24 inch)

    Pinout

    Label Name Function Description
    1 Left signal input terminal Connect with oxygen / O2 sensor probe
    2 Right signal output terminal I2C signal output terminal, connected to the controller
    3 DIP switch I2C address switching

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