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Gravity: Electrochemical Oxygen Sensor (0-25%Vol, I2C)


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₹5,366.64 inc. GST
₹4,548.00 ex. GST
This electrochemical oxygen sensor accurately measures oxygen concentration (0-25% vol) with high anti-interference ability. It supports I2C output and is compatible with Arduino, ESP32, Raspberry Pi. View full description
₹5,366.64 inc. GST
₹4,548.00 ex. GST
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The Oxygen Sensor is an electrochemical device that can accurately and conveniently measure the concentration of oxygen in the air. It has high anti-interference ability, stability, and sensitivity and can be used in a variety of applications, including portable devices, air quality monitoring devices, and in industries, mines, warehouses, and other spaces where air circulation is limited.

This compact oxygen sensor is compatible with the Arduino Uno, esp32, Raspberry Pi, and other mainboards and supports I2C output. It can be calibrated in the air and has a measurement range of 0-25% Vol with a resolution of 0.15% Vol. It is compatible with a wide range of input voltages (3.3V to 5.5V) and has a long lifespan of up to 2 years. With its simple Gravity interface and practical sample code, you can easily build your own oxygen concentration monitor.

  • High sensitivity
  • I2C Interface
  • Compatible with both 3.3V and 5V micro-controllers
  • Polarity protection
Package Contents
  • Gravity: Electrochemical Oxygen Sensor (0-25%Vol, I2C) x1
  • Gravity-4pin I2C Cable x1
  • M3x10 Nylon post x4
  • M3x5 Screws x8


Q: What is the measurement range of the oxygen sensor?

A: The sensor measures oxygen concentration in the range of 0-25% vol (volume percent).

Q: How does this sensor communicate with my microcontroller or board?

A: The sensor uses the I2C communication protocol, which is widely supported by microcontrollers like Arduino, ESP32, and Raspberry Pi.

Q: Does this sensor require any calibration?

A: Yes, the sensor requires calibration before use to ensure accurate readings. The product description mentions a calibration command for this purpose.

Q: What is the response time of the sensor?

A: The response time of the sensor, which is the time it takes to detect a change in oxygen concentration, is T90 ≤ 120 seconds.

Q: What applications is this sensor suitable for?

A: The sensor's high anti-interference ability and wide measurement range make it suitable for various applications, including:

  • Environmental monitoring
  • Industrial process control
  • Agricultural applications
  • Safety equipment
  • DIY projects

Technical Specifications

Target Gas:
Operating Voltage:
3.3 to 5.5V DC
Output Signal:
I2C output
Measurement Range:
Maximum Measurement Limit:
30% Vol
(0.10+-0.05) mA (in the air)
< 2% (Every month)
< 2%
Response Time:
< = 15 seconds
Operating Temperature:
Operating Humidity:
0~99%RH (no condensation)
Pressure Range:
standard atmospheric pressure +-10%
> 2 years (in the air)
37 x 27 x 24.5 mm

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.