DFRobot Gravity O3 Sensor (Calibrated) – I2C & UART


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Approx Restocking Date: 25 to 30 Days
SKU: 1356256
  1. Brand: DFRobot
  2. Product: Gravity O3 Sensor (Calibrated) – I2C & UART
  3. Detection Gas: ozone (O3)
  4. Detection range: 0~10ppm
  5. Working Voltage: 3.3~5.5V DC


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Brand: DF Robot
Category: Gas and Dust Sensor

This is a sensor that detects ozone concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of ozone in the environmentCan be widely used in industrial and environmental protection fields for ozone detection.

The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, ESP32, and raspberry pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build an ozone concentration detector.DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, and HF, which are used in exactly the same way and data format, so you can combine them according to your needs.

Connection Diagram:

Df Robot Sku1356256

Useful link:

Library- https://github.com/DFRobot/DFRobot_MultiGasSensor



  1. Strong anti-interference ability
  2. High stability
  3. High sensitivity
  4. Easy to use
  5. Plug and play device
  6. Low power consumption

Package Includes:

1 x DFRobot Gravity O3 Sensor (Calibrated) – I2C & UART

SKU: 1356256 Category:
Detection Gas

ozone (O3)

Detection range


Working Voltage

3.3~5.5V DC

Working Current


Output Signal

I2C, UART (0~3V), analog voltage


Arduino, ESP32, Raspberry pi


>2 years (in the air)

Operating Temperature (°C)

-20 to 50

Shipping Weight 0.081 kg
Shipping Dimensions 13 × 9 × 4 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China