DFRobot
Gravity: IIC Ozone Sensor (0-10ppm)
The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Factory-cali...
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The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Factory-calibrated for accurate readings out of the box, it connects via I2C through DFRobot's Gravity 4-pin interface.
Compatible with Arduino, ESP32, Raspberry Pi, and other 3.3–5.5V microcontrollers, this sensor is suited for air quality monitoring, disinfection equipment, and environmental sensing applications. The electrochemical cell has a working life of over 2 years in air.
Key Features
- Electrochemical Ozone Sensing – Factory-calibrated for accurate O₃ measurement
- 0–10 ppm Range – With 10 ppb (0.01 ppm) resolution
- I2C Output – Simple digital interface via Gravity 4-pin connector
- Wide Voltage Input – 3.3–5.5V DC compatible
- 2+ Year Lifespan – Electrochemical cell rated for over 2 years in air
Specifications
- Detection Gas – Ozone (O₃)
- Measuring Range – 0–10 ppm
- Resolution – 0.01 ppm (10 ppb)
- Operating Voltage – 3.3–5.5V DC
- Interface – I2C (Gravity 4-pin)
- Warm-Up Time – ≤3 minutes
- Response Time – ≤90 seconds
- Recovery Time – ≤90 seconds
- Operating Temperature – −20 to 50°C
- Operating Humidity – 15–95% RH (non-condensing)
- Dimensions – 37 × 27 mm
Ideal For
- Air quality monitoring stations
- Disinfection equipment monitoring
- Smart home environmental sensing
- Portable ozone detection instruments
Package Contents
- 1× Gravity IIC Ozone Sensor (0–10 ppm)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- ESP32
- ESP32 is a family of low-cost microcontroller chips and modules from Espressif with built-in WiFi and Bluetooth. They support programmable firmware and over-the-air updates, and are commonly programmed with toolchains such as the Arduino core and ESP-IDF.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
Find this product in
Brands
Supplier page — dfrobot.com
Supplier Description · 612.8 KB · Click any page to view full size
SEN0321 iic ozone sensor dimension v1
Mechanical Drawings · 69.7 KB · Click any page to view full size
SEN0321 iic ozone sensor schematics v1
Schematic · 204.6 KB · Click any page to view full size
SEN0321 iic ozone sensor datasheet v1
Datasheet · 487.8 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
