Introduction - If you have any usage issues, please Google them yourself
MH-Z19 carbon dioxide gas sensor (hereinafter referred to as sensor) is
A universal and small sensor using the principle of non dispersive infrared (NDIR).
The detection of CO2 in air has good selectivity and no oxygen.
Gas dependence and long life. Built-in temperature compensation; at the same time it has digital output and
Waveform output, easy to use. The sensor is a mature infrared absorption gas
Detection technology is closely combined with precise optical design and excellent circuit design.
A high performance sensor.
Characteristic
High sensitivity, high resolution, low power consumption
Provide a variety of output modes, such as UART, PWM waveform, etc.
Temperature compensation, excellent linear output
Excellent stability
Long service life
Anti water vapor interference, no poisoning