DFRobot Gravity I2C Oxygen Sensor – 0–25% Vol Range

The DFRobot Gravity I2C Oxygen Sensor is an electrochemical sensor designed for accurate ambient oxygen concentration measurement. It supports I2C digital output and operates within a 3.3–5.5V DC range, making it compatible with Arduino, ESP32, and Raspberry Pi platforms. The sensor provides stable performance with a 0–25% Vol measurement range, 0.15% Vol resolution, and ≤15 s response time. Designed for reliability, it offers high anti-interference capability and over 2 years service life in air. Ideal for air quality monitoring systems, portable detection devices, and industrial safety applications.

• Electrochemical oxygen sensing technology
  
• I2C digital output interface
  
• 0–25% Vol effective measurement range
  
• 0.15% Vol resolution
  
• ≤15 s response time
  
• High anti-interference performance
  
• 3.3–5.5V DC operating voltage
  
• Stability <2% per month
  
• Repeatability <2%
  
• Wide humidity tolerance 0–99% RH
  
• Operating temperature −20 to 50°C
  
• Service life >2 years in air
  
• Gravity interface for plug-and-play integration

• Detection Gas: Oxygen
  
• Operating Voltage: 3.3–5.5V DC
  
• Output Signal: I2C Digital Output
  
• Measurement Range: 0–25% Vol
  
• Maximum Measurement Limit: 30% Vol
  
• Resolution: 0.15% Vol
  
• Sensitivity: (0.10 ± 0.05) mA in Air
  
• Stability: <2% per Month
  
• Repeatability: <2%
• Response Time: ≤15 s
  
• Operating Temperature: −20 to 50°C
  
• Operating Humidity: 0–99% RH Non-Condensing
  
• Pressure Range: Standard Atmospheric ±10%
  
• Lifetime: >2 Years in Air
• Dimensions: 37 × 27 × 24.5 mm
  
• Weight: 37 g
  
• Compatibility: Arduino, ESP32, Raspberry Pi
  

• DFRobot Gravity I2C Oxygen Sensor Datasheet
• Product wiki
• More Documents

• DFRobot_OxygenSensor Library
• DFRobot_OxygenSensor Tutorial