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MH-Z19B Carbon dioxide gas sensor

Carbon dioxide sensor CO2 MH-Z19B UART PWM digital multiple output, gas sensor.

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Product Details:

MH-Z19B Carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general intelligent small sensor, using non-dispersible infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and no oxygen dependence, long life. Built-in temperature compensation: digital output, analog output and PWM output, easy to use. The sensor is a high performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.


1. The gas chamber is treated with gold, waterproof and anticorrosive

2. High power consumption, low power consumption

3. Excellent stability

4. Temperature compensation, excellent linear output

5. Provides serial port (UART), analog (DAC), PWM waveform output

6. Long service life

7. Resistance to water vapor interference, no poisoning

Main application:

1. Hvac refrigeration equipment

2. Air purification equipment

3. Air quality monitoring equipment

4. Smart home

5. Fresh air system

6. The school


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