
Fermion: MEMS Nitrogen Dioxide NO2 Gas Detection Sensor (Breakout, 0.1-10ppm)
- Delivery nationwide via The Courier Guy — R150 flat, free over R2,000
- Free collection from our Milnerton (Cape Town) warehouse
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- Questions? WhatsApp us on +27 65 900 8570
Description
The Fermion MEMS Nitrogen Dioxide (NO2) Gas Detection Sensor is an ultra-compact breakout designed for qualitative monitoring of NO2 levels from 0.1 to 10ppm. Featuring low power draw and simple analog output across 3.3V to 5V, it is ideal for makers, students, and educators building ambient air monitors and vehicle exhaust detection projects.
Compact MEMS technology
Built using micro-electromechanical system technology, this miniature sensor measures just 13 x 13 x 2.5mm and consumes under 20mA. It provides rapid response and recovery times with minimal heat generation and short warm-up requirements.
Arduino wiring and analog output
The breakout outputs an analog voltage signal proportional to qualitative gas concentration, making it straightforward to connect to an Arduino UNO or compatible development board. It includes a 2.54mm pitch header pin strip for easy breadboard prototyping.

Air quality and emission applications
This sensor is well suited for detecting NO2 in ambient air quality monitors, automotive emission indicators, and educational industrial safety setups. Note that this module is designed for qualitative measurement and must not be used in personal safety critical systems.
Operating precautions and care
Peel off the protective film before use, and preheat the module for at least 24 hours if it has been left unused for extended periods. To maintain reliability, avoid contact with water, silicone vapours, corrosive gases, halogen contamination, and excessive mechanical shock.
Downloads & documentation
Specifications
| Gas detected | NO2 |
| Detection range | 0.1-10ppm |
| Operating voltage | 3.3-5V |
| Operating current | <20mA |
| Output signal | Analog voltage |
| Sensitivity | R0(in air)/Rs(in 5ppm NO2) ≤ 0.5 |
| Operating temperature | -10-50℃ |
| Operating humidity | 15-90%RH (non-condensing) |
| Lifespan | ≥5 years (in air) |
| Dimension | 13×13 x 2.5mm/0.0.51×0.51x0.1" |
In the box
| Fermion: MEMS Nitrogen Dioxide NO2 Gas Detection Sensor × 1 | 1 |
| 2.54mm pitch header pin × 1 | 1 |
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