# Gravity: SO2 Sensor (Calibrated) - I2C & UART

**Type:** Product page · **SKU:** SEN0470 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-so2-sensor-calibrated-i2c-uart.html ([markdown](https://core-electronics.com.au/gravity-so2-sensor-calibrated-i2c-uart.html.md))

The factory-calibrated sulfur dioxide sensor has a variety of signal output methods to meet various communication needs...

## Pricing

- **Price:** $259.95 (inc GST) — $236.32 AUD, exc GST
- **Quantity discounts:** 6+ $224.50 (exc GST) · 12+ $215.05 (exc GST)

## Availability & dispatch

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

## Description

This is a sensor that detects sulfur dioxide 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 sulfur dioxide in the environment.** Can be widely used in the detection of sulfur dioxide in industrial and environmental protection fields.

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](https://core-electronics.com.au/arduino.html), [ESP32](https://core-electronics.com.au/development-boards.html#category_2184), and [Raspberry Pi](https://core-electronics.com.au/raspberry-pi.html). The easy-to-use Gravity interface, coupled with our sample code, can quickly build a hydrogen chloride concentration detector.

DFRobot has introduced 12 gas detection sensors in this series, [CO](https://core-electronics.com.au/gravity-co-sensor-calibrated-i2c-uart.html), [O2](https://core-electronics.com.au/gravity-o2-sensor-calibrated-i2c-uart.html), [NH3](https://core-electronics.com.au/gravity-nh3-sensor-calibrated-i2c-uart.html), [H2S](https://core-electronics.com.au/gravity-h2s-sensor-calibrated-i2c-uart.html), [NO2](https://core-electronics.com.au/gravity-no2-sensor-calibrated-i2c-uart.html), [HCL](https://core-electronics.com.au/gravity-hcl-sensor-calibrated-i2c-uart.html), [H2](https://core-electronics.com.au/gravity-h2-sensor-calibrated-i2c-uart.html), [PH3](https://core-electronics.com.au/gravity-ph3-sensor-calibrated-i2c-uart.html), [SO2](https://core-electronics.com.au/gravity-so2-sensor-calibrated-i2c-uart.html), [O3](https://core-electronics.com.au/gravity-o3-sensor-calibrated-i2c-uart.html), [CL2](https://core-electronics.com.au/gravity-cl2-sensor-calibrated-i2c-uart.html), [HF](https://core-electronics.com.au/gravity-hf-sensor-calibrated-i2c-uart.html), which are used in exactly the same way and data format, so you can combine them according to your needs.

![Gravity: SO2 Sensor (Calibrated) - I2C & UART](https://core-electronics.com.au/attachments/localcontent/1(2)_18296768145.png)

###  Features

6. Strong anti-interference ability
7. High stability
8. High sensitivity
###  Applications

10. Industrial sulfur dioxide detection
11. Environmental protection device
###  Specification

13. Detection Gas: Sulfur dioxide (SO2)
14. Detection range: 0~20ppml
15. Working Voltage: 3.3~5.5V DC
16. Working Current: <5mA
17. Output Signal: I2C, UART (0~3V), analog voltage
18. Working Temperature: -20~50°C
19. Working Humidity: 15~90%RH (non-condensing)
20. Storage Temperature: -20~50°C
21. Storage Humidity: 15~90%RH (non-condensing)
22. Lifespan: >2 years (in the air)
23. Adapter Plate Size: 37\*32mm
24. Compatibility: Arduino, ESP32, Raspberry pi
  **Documents**26. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0465toSEN0476_Gravity_Gas_Sensor_Calibrated_I2C_UART)
###  Parts List

28. Gravity: SO2 Signal Conversion Board x1
29. SO2 sensor probe x1
30. Gravity - 4pin Cable x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_12820.jpg)