Gravity: Factory Calibrated Electrochemical SO2 Sensor (0-20ppm, I2C&UART)
- Delivery nationwide via The Courier Guy — R150 flat, free over R2,000
- Free collection from our Milnerton (Cape Town) warehouse
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Description
The Gravity Factory Calibrated Electrochemical SO2 Sensor measures ambient sulfur dioxide concentrations across a 0 to 20ppm range with high stability and sensitivity. Designed for environmental monitoring and industrial safety projects, it provides straightforward integration with Arduino, ESP32, and Raspberry Pi microcontrollers.
Factory-calibrated electrochemical probe
The electrochemical probe is pre-calibrated at the factory for quick, accurate sulfur dioxide measurements straight out of the box. It features strong anti-interference capabilities, high stability, and an operational lifespan exceeding two years in ambient air.
Multiple communication interfaces
The sensor adapter board supports three distinct output options: I2C, UART (0 to 3V), and analog voltage. With 32 modifiable I2C addresses, you can easily connect and address multiple sensors on the same communication bus.
Onboard compensation and threshold alarms
An integrated temperature compensation algorithm maintains measurement consistency across operating temperatures from -20 to 50 degrees Celsius. The board also includes an onboard threshold alarm function to alert your system when gas limits are breached.
Broad controller compatibility
Operating on a wide 3.3V to 5.5V DC supply with a low operating current under 5mA, this module pairs seamlessly with standard 3.3V and 5V development boards. The standard Gravity 4-pin interface enables plug-and-play wiring using the provided cable.
Modular multi-gas series
This unit is part of a 12-sensor electrochemical gas detection lineup that shares uniform pinouts, usage methods, and data formats. This standardization allows you to combine various target gas sensors within the same monitoring system without rewriting code.
Kit contents
Each pack includes one Gravity SO2 signal conversion board, one electrochemical SO2 sensor probe, and one Gravity 4-pin sensor cable.
Downloads & documentation
Specifications
| Detection Gas | Sulfur dioxide (SO2) |
| Detection range | 0~20ppml |
| Working Voltage | 3.3～5.5V DC |
| Working Current | ＜5mA |
| Output Signal | I2C, UART (0~3V), analog voltage |
| Working Temperature | -20～50℃ |
| Working Humidity | 15～90%RH (non-condensing) |
| Storage Temperature | -20～50℃ |
| Storage Humidity | 15～90%RH (non-condensing) |
| Lifespan | >2 years (in the air) |
| Adapter Plate Size | 37*32mm |
| Compatibility | Arduino, ESP32, Raspberry pi |
In the box
| Gravity: SO2 Signal Conversion Board | 1 |
| SO2 sensor probe | 1 |
| Gravity - 4pin Cable | 1 |
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