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- Small and easy to fit at 13 x 13 x 2.5mm.
- Uses less than 20mA, keeping power costs low.
- Accurate readings with a sensitivity ratio of ≥ 3.
- Fast reactions for reliable results.
- Built with modern MEMS technology for precise performance.
- Detects ammonia (NH3) in a range of 1-300ppm.
- Functions at 3.3-5V with temperatures from -10 to 50°C and 15-90% humidity.
- Lasts at least 5 years in the air.
- Provides an analog voltage output for easy integration.
Fermion MEMS Gas Detection Sensor Ammonia (NH3) - (Breakout, 1-300ppm)
We're happy to introduce you to the Fermion MEMS Ammonia NH3 Gas Detection Sensor. This sensor is great for keeping track of ammonia levels in different places.
It’s small, measuring just 13 x 13 x 2.5mm, so it fits easily into your systems. It uses very little power—less than 20mA—helping you save on energy costs. Plus, it heats up quickly and gives fast readings, so you can rely on it when you need to check the air.
You can use this sensor to find ammonia leaks in cold storage, manage risks in fish farming, or monitor odors in bathrooms. If you’re looking for a reliable way to ensure safety and keep the air fresh, the Fermion MEMS NH3 Sensor is a perfect choice.
Precautions for Use:
- Do not forget to remove the protective film before using the sensor.
- Keep the sensor away from silicone adhesives and hair gel.
- Try to keep the sensor free from harsh substances such as alkalis and halogens.
- Avoid exposing the sensor to high levels of harmful gases like H2S, SOX, Cl2, or HCl.
- Do not expose the sensor to very high temperatures, humidity, or pollution for extended periods of time.
- Keep the sensor away from water, humidity, and freezing temperatures.
- Be cautious with the sensor and avoid shaking, dropping, or striking it.
- If you haven't used the sensor in a while, do a 24-hour warmup.
Please don’t use this sensor in situations where safety is a major concern.
Wiring Diagram of Fermion MEMS NH3 Sensor and Arduino UNO:

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Shipping & Returns
- All orders confirmed before 3 pm IST are shipped on the
same day, barring rare pickup delays on holidays or disturbances - Delivery time in Metro cities is 1-3 days, Others it is
3-7 days. It varies based on location, reliant on courier services - Return window: 7 days from receipt unless stated
otherwise. No refunds/replacements after - Returns only for non-working/damaged products are accepted
- Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
- Refunds are processed within 3-4 working days post inspection and approval.
For more details, please check our Shipping and Return Policy
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Package Includes:
- 1 x Fermion MEMS Gas Detection Sensor Ammonia (NH3)
- 1 x 2.54mm pitch header pin
Specifications:
Specification | Details |
---|---|
Gas Detected | Ammonia (NH3) |
Detection Range | 1-300 ppm |
Operating Voltage | 3.3-5 V |
Operating Current | 20 mA |
Output Signal | Analog voltage |
Sensitivity | R0 (in air) / Rs (in 50 ppm NH3) ? 3 |
Operating Temperature | -10 to 50 °C |
Operating Humidity | 15-90% RH (non-condensing) |
Lifespan | ? 5 years (in air) |
Dimensions | 13 × 13 × 2.5 mm (0.51 × 0.51 × 0.1 in) |
The sensor was delivered securely packaged, preventing any transit damage. The website provided detailed specs, helping me make an informed decision. The sensor performs well with low power consumption.
The sensor accurately detected ammonia concentrations as expected. Delivery was timely, and the packaging protected the sensor well. Technical support answered my questions thoroughly, enhancing my confidence in the product.
The technical support team was very helpful with wiring and calibration advice. The sensor arrived in perfect condition. The website was user-friendly, and delivery was timely.
The website had clear and detailed product information. Ordering was easy, and the sensor arrived safely packed. Its performance in ammonia detection was reliable and accurate.
The compact sensor fits easily in my device. It arrived well-packaged, and the website checkout was smooth. Customer support answered all my queries quickly, enhancing my experience.