# Gravity: Electrochemical Oxygen Sensor (0-100%Vol) - I2C

**Type:** Product page · **SKU:** SEN0496 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-electrochemical-oxygen-sensor-0-100vol-i2c-1.html ([markdown](https://core-electronics.com.au/gravity-electrochemical-oxygen-sensor-0-100vol-i2c-1.html.md))

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,...

## Pricing

- **Price:** $159.95 (inc GST) — $145.41 AUD, exc GST
- **Quantity discounts:** 6+ $138.14 (exc GST) · 12+ $132.32 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

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.

**Caution:** Exposure to high concentrations of solvent vapors is avoided, both during storage, fitting into instruments, and operation.

**![Gravity: Electrochemical Oxygen Sensor (0-100%Vol) - I2C](https://core-electronics.com.au/attachments/localcontent/1_87824b051b6.png)**

**I2C Oxygen Sensor Selection Guide**

| **Product** | **[Gravity: I2C Oxygen Sensor](https://www.dfrobot.com/product-2052.html)** | **[Gravity: O2 Sensor (Calibrated)](https://www.dfrobot.com/product-2510.html)**  **[ - I2C & UART](https://www.dfrobot.com/product-2510.html)** | **[Gravity: Electrochemical Oxygen Sensor (0-100%Vol) - I2C](https://www.dfrobot.com/product-2569.html)** |
|---|---|---|---|
| **SKU** | **[SEN0322](https://www.dfrobot.com/product-2052.html)** | **[SEN0465](https://www.dfrobot.com/product-2510.html)** | **[SEN0496](https://www.dfrobot.com/product-2569.html)** |
| **Detection**  **Range** | 0~25%Vol | 0~25%Vol | 0~100%Vol |
| **Calibration**  **Method** | Manual calibration | Factory calibration | Manual calibration |
| **Output Signal** | I2C | I2C?UART?Analog | I2C |
| **Working**  **Principle** | Electrochemical | Electrochemical | Electrochemical |
| **Stability** | <2%/Month | <2%/Month | <10%/Year |
| **Response Time** | =15S | =15S | 0.1%~20.9%<40S 20.9%~100%<5S |
| **Operating**  **Pressure Range** | 101kPa±10% | 101kPa±10% | 0.5 - 2.0 Bar |
| **Temperature**  **Compensation** | × | v | × |

###  Features

8. Strong anti-interference ability
9. High stability and sensitivity
###  Applications

11. Oxygen generators
12. Automobile exhaust
13. Air-fuel ratio detection
###  Specification

15. Physical Quantity Detected: Oxygen concentration
16. Measuring Range: 0~100%
17. Working Voltage: 3.3~5.5V DC
18. Output Signal: I2C
19. Working Pressure Range: 0.5~2.0Bar
20. Operating Temperature Range: -20°C ~ +50°C
21. Operating Humidity Range: 0-99% RH (non-condensing)
22. Response Time: <5S
23. Lifespan: >2 years (in air)
24. Size: 32mm\*27mm/1.26\*1.06 inch
25. Mounting Hole Size: inner diameter 3.1mm(0.12 inch)/outer diameter 6mm(0.24 inch)
26. Compatible with Arduino, ESP32, Raspberry Pi
  **Documents**28. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0496_Gravity_Electrochemical_Oxygen_Sensor_0_100_I2C)
29. [AO2 Datasheet](https://core-electronics.com.au/attachments/localcontent/c5b6e77ef61f18172ffda4a2e4ebec19_33351be075b.pdf)
30. [Schematics](https://core-electronics.com.au/attachments/localcontent/bdd0476bbc695cdcacc44a9e755ef5be_97696899b8b.pdf)
31. [Dimension & Component Layout](https://core-electronics.com.au/attachments/localcontent/927c0042562cd7dd805562e5a681acd4_69410d653c7.pdf)
###  Parts List

33. Gravity: AO2 Oxygen Sensor Signal Adapter Board x1
34. AO2 Oxygen Sensor Probe x1
35. Gravity-4Pin Cable x1
36. Molex 2510 - PH2.0 cable (20CM) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0496-1.jpg)