Gravity: Factory Calibrated Electrochemical Nitrogen Dioxide 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 Nitrogen Dioxide Sensor measures NO2 concentrations from 0 to 20ppm with high sensitivity and stability. Designed for makers, students, and engineers, it integrates seamlessly with Arduino, ESP32, and Raspberry Pi for environmental monitoring and industrial safety projects.
Electrochemical detection with temperature compensation
The probe uses an electrochemical mechanism that provides strong anti-interference capabilities and high measurement stability. It comes pre-calibrated from the factory, includes an integrated temperature compensation algorithm, features a threshold alarm function, and offers an operating lifespan of over two years in air.
Versatile digital and analog outputs
This sensor module supports three output modes: I2C, UART (0-3V), and analog voltage. The I2C interface supports 32 user-modifiable addresses, allowing multiple sensors to operate simultaneously on a single bus.
Standardised multi-gas sensor ecosystem
This module belongs to a series of 12 compatible DFRobot gas sensors sharing identical data formats and interfaces. This uniform design allows you to mix and match probes easily to detect various gases across your projects.
Low power consumption and broad compatibility
Operating on a wide 3.3V to 5.5V DC supply, the conversion board consumes less than 5mA of current. Its compact 37 by 32mm footprint and operating range of -20 to 50 degrees Celsius make it suitable for low-power and portable monitoring setups.
Industrial safety and environmental applications
The sensor is suited for detecting nitrogen dioxide in industrial processes, underground environments, and outdoor environmental protection devices. Sample code and the plug-and-play Gravity interface enable rapid prototyping.
Package contents
The kit includes one Gravity NO2 signal conversion board, one factory-calibrated NO2 sensor probe, and one Gravity 4-pin connection cable.
Downloads & documentation
Specifications
| Detection Gas | Nitrogen Dioxide(NO2) |
| Detection range | 0~20ppm |
| 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: NO2 Signal Conversion Board | 1 |
| NO2 sensor probe | 1 |
| Gravity - 4pin Cable | 1 |
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