DF Robot Ozone Sensor I2C (0-10ppm)

Gravity: I2C Ozone Sensor (0-10ppm) is based on electrochemical principles and it can measure the ambient O3 concentration accurately and conveniently. With high anti-interference ability, high stablility and high sensitivity, this arduino-compatible ozone sensor can be widely applied to fields like portable device, air quality monitoring device, disinfection cabinets and smart home.


This compact dfrobot ozone sensor supports I2C output, it is compatible with many mainboards like Arduino Uno, esp32, Raspberry Pi and so on. Its resolution can reach to 10ppb. It supports wide range input voltage: 3.3V to 5.5V. Moreover, the lifetime is as long as 2 years. With simple Gravity interface and practical sample code, you can build your own ozone concentration monitor easily and conveniently.

Quick Spec

  • Detection Gas: Ozone
  • Working Voltage: 3.3 ~ 5.5V DC
  • Interface: Gravity-4Pin
  • Output Signal: I2C output
  • Measuring Range: 0 ~ 10ppm
  • Resolution: 0.01ppm (10ppb)
  • Warm-up Time: ≤3 minutes
  • Response Time: ≤90 seconds
  • Recovery Time: ≤90 seconds
  • Working Temperature: -20 ~ 50°C
  • Operating Humidity: 15 ~ 95% RH (non-condensing)
  • Storage Temperature: -20 ~ 50°C
  • Life:> 2 years (in air)
  • Dimension: 37 x 27mm
  • Weight: 22g

Wiring Diagram


Sample Code

  * @file  ReadOzoneData.ino
  * @brief Reading ozone concentration, A concentration of one part per billion (PPB).
  * @n step: we must first determine the iic device address, will dial the code switch A0, A1 (ADDRESS_0 for [0 0]), (ADDRESS_1 for [1 0]), (ADDRESS_2 for [0 1]), (ADDRESS_3 for [1 1]).
  * @n       Then configure the mode of active and passive acquisition, Finally, ozone data can be read.
  * @n note: it takes time to stable oxygen concentration, about 3 minutes.
  * @n The experimental phenomenon is to print one billionth of the ozone concentration on the serial port.
  * @n Because the value measured by the sensor is less than 10000, the value obtained will not be greater than 10000
  * @copyright   Copyright (c) 2010 DFRobot Co.Ltd (https://www.dfrobot.com)
  * @licence     The MIT License (MIT)
  * @author      ZhixinLiu(zhixin.liu@dfrobot.com)
  * @version     V0.2
  * @date        2019-10-10
  * @get         from https://www.dfrobot.com
  * @url   */
#include "DFRobot_OzoneSensor.h"

#define COLLECT_NUMBER   20              // collect number, the collection range is 1-100
#define Ozone_IICAddress ADDRESS_3
/*   iic slave Address, The default is ADDRESS_3
       ADDRESS_0               0x70      // iic device address
       ADDRESS_1               0x71
       ADDRESS_2               0x72
       ADDRESS_3               0x73
DFRobot_OzoneSensor Ozone;
void setup() 
  while(!Ozone.begin(Ozone_IICAddress)) {
    Serial.println("I2c device number error !");
  }  Serial.println("I2c connect success !");
/*   Set iic mode, active mode or passive mode
       MEASURE_MODE_AUTOMATIC            // active  mode
       MEASURE_MODE_PASSIVE              // passive mode

void loop() 
/*   Smooth data collection
       COLLECT_NUMBER                    // The collection range is 1-100
  int16_t ozoneConcentration = Ozone.ReadOzoneData(COLLECT_NUMBER);
  Serial.print("Ozone concentration is ");
  Serial.println(" PPB.");


Shipping List

  • 1 x DF Robot Ozone Sensor I2C (0-10ppm)
  • 1 x Gravity-4pin I2C Cable

DF Robot Ozone Sensor I2C (0-10ppm)

  • Brand: DF Robot
  • Product Code: SEN0321
  • Stock

    Warehouse Stock Status Location
    Centurion Out Of Stock UR168
    Stellenbosch Out Of Stock
  • R989.00 (Inc Tax: R1,137.35)

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Tags: ozone, atmoshere, air, quality, gravity, sensor, i2c, pollution, organic, o3, oxygen