The MH-Z19E caon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. No oxygen dependence, long life, etc.
The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.
High sensitivity, low consumption,Excellent stability,Temperature compensation, excellent linear output Provide serial port (UART), PWM waveform and other output methods long lasting Anti-water vapor interference, no poisoning.
Product model: MH-Z19E
Detection gas: caon dioxide
supply voltage: DC(5.0 +/- 0.1）V
Average current: less than 40mA (@5V supply)
Peak current:125mA (@5V supply)
Interface level: 3.3V (compatible with 5V)
Measuring range: 400~5000ppm optional
Output signal: serial port (UART) (TTL level 3.3V); PWM
m-up time: 1min
Response time: T90 less than 120s
Working temperature: -10℃~50℃
Storage temperature: -20℃~60℃
Working humidity: 0~95%RH (non-condensing)
Type: A: Row Pin
Colour: As Shown
Air quality monitoring equipment
Fresh air system
Air purification equipment
1 x MH-Z19E IR Infrared CO2 Sensor
1 X Cable
Arduino library for the MH-Z19X CO2 sensor
User Manual for MH-Z Series Infrared CO2 Sensor Module Communication Protocol
The Englisih datasheet for the MH-Z19: MH-Z19
The English datasheet for the non-JST MH-Z19B version: MH-Z19B NON-JST.
The Chinese datasheet for the JST MH-Z19B version (more detailed): MH-Z19B JST.