Ozone sensor MQ131 breakout
SKU: 333110
Bulk order
Get a special price per unit if you order more
[pricing_table]
Coming soon
€15.50
Out of stock
Notify me when back in stock
24/7 lifetime customer and technical support
2-year Warranty - no questions asked
Comprehensive Documentation
Open-source everything
Product Description
The MQ131-H is the high concentration version of the MQ131 ozone sensor, designed for detecting ozone (O₃) levels in the 10–1000 ppm range. This sensor offers good sensitivity to O₃ and operates on the semiconductor detection principle, making it well-suited for industrial and environmental applications.
The MQ131 sensor’s sensitivity and selectivity enable it to effectively detect and measure ozone levels, making it a valuable tool for applications such as air quality monitoring, ozone generators, and ozone leakage detection systems. By integrating the MQ131 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that provide real-time ozone concentration monitoring and trigger alerts when hazardous levels are detected.
The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer, while the analog output will vary depending on the intensity of the detected gas.
Product usage tips:
- When gas is detected, the LED will light up. It will remain off if no gas is detected.
- The board includes two mounting holes for easy installation on surfaces.
- Four male headers are included but need to be soldered by the user.
Product features
Complimentary technical support
In case you ever get stuck with using this product, you can count on us. We provide free, no-strings-attached technical support with this product. Just reach out to us with your questions, and we'll be there to help you.
Open-source
Open-source culture is rooted deep inside us, and that’s reflected in our products. This product follows the open-source principle. It was made with the community’s suggestions and needs in mind. With a modular design, it can be modified to your needs and incorporated into your projects. We provide all the design documentation needed free of charge on our Github repository.
Made in EU
Soldered products, designed and manufactured in Croatia, are thoroughly tested and meet the highest EU standards of quality and safety.
Key features
- Sensor: MQ131
- Detects: ozone
- Detection range: 10 ... 1000ppb ozone
- Power supply: 5 V
- Output: 1V at 200ppb O3
- Dimensions: 22 x 38 mm / 0.9 x 1.5 inch
Full product documentation 
Getting started with Arduino 
Arduino library 
Arduino library documentation 
Open Source Hardware files 
Pinout drawing 
Hardware details 
Product datasheet 
CE certificate Customer reviews & ratings
0 reviews
No reviews yet.
Be the first one to leave a review for this product.
11 years in the industry
Customers in 80+ countries
20,000+ satisfied customers
You must be logged in to post a review.