DFRobot - Gravity: Factory Calibrated Electrochemical Nitrogen Dioxide Sensor (0-20ppm, I2C/UART)

This electrochemical sensor for detecting Nitrogen Dioxide (NO2) concentration. The detection range is 0 to 20ppm. The sensor module provides three output modes: I2C, UART (0-3V), and analog voltage. The probe is factory-calibrated and features an integrated temperature compensation algorithm and a threshold alarm function. The I2C address is user-modifiable (32 options). It operates on a 3.3V to 5.5V DC supply with a working current of less than 5mA. The probe has a service life of over two years in air. Compatible with Arduino, ESP32, and Raspberry Pi.

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 easy-to-use Gravity interface, coupled with our sample code, can quickly build a nitrogen dioxide concentration detector.

DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.

• Strong anti-interference ability
• High stability
• High sensitivity

• Industrial nitrogen dioxide detection
• Underground nitrogen dioxide detection
• Environmental protection device

• 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

• Gravity: NO2 Signal Conversion Board x1
• NO2 sensor probe x1
• Gravity - 4pin Cable x1