NDIR CO2 Sensor MH-Z14A

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MH-Z14A NDIR Infrared gas module is a common type, smal size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digita output and PWM output. This common type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optica circuit design and superior circuit design.


*High sensitivity, High resolution

*Good stability

*Quick response

*Temperature compensation, excellent linear output

*Long lifespan

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Air Purifier

Winsen is a world-renowned gas sensor manufacturer and supplier. A variety of sensors are intelligently combined and developed to form the overall concept of the module. The extremely flexible assembly combination can meet the sensitivity, corresponding speed, stability, power consumption and size requirements of all air purifiers on the market.



Winsen Technology has provided accurate gas detection solutions for more than 1,000 fresh air enterprises, which has also established the influence of Winsen sensors in the air purification market. In the future, Winsen will launch more intelligent and miniaturized all-in-one integrated modules to meet the various needs of different customers in the ventilation system market.


Indoor Air Quality Monitoring

The World Health Organization's "Indoor Air Pollution and Health" pointed out that the current level of indoor air pollution is 5-10 times higher than outdoor pollution, and 4% of global diseases are related to indoor air quality, and about 2 million people die prematurely each year from diseases caused by indoor air pollution.


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Specification Product Size

Technical Data Sheet

Model No. MH-Z14A
Detection Gas CO2 gas
Working voltage DC (5.0±0.1V)
Average current < 40 mA (@5V supply)
Peak current 125mA (@5V supply)
Interface level 3.3 V (5V compatible)
Measuring range 400~10000ppm optional
Output signal Serial port(UART) (TTL)
Preheat time 1min
Response Time T90 < 120s
Working temperature -10℃ ~ 50℃
Working humidity 0~95%RH(no condensation)
Storage temperature -20℃ ~ 60℃
Weight 14 g
Lifespan >10 years


Target Gas Measuring Range Accuracy Mark
Carbon Dioxide
0~2000ppm ±(50ppm
+5%reading value)
Temperature compensation
0~5000ppm Temperature compensation
0~1%VOL Temperature compensation
0~5%VOL Temperature compensation


Free Guide! Learn the Parameter Differences of Similar Sensors

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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


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We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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