Carbon Dioxide Sensor CO2 Sensor - MH-Z19

Carbon Dioxide Sensor CO2 SensorMH-Z19 Description:

The MH-Z19 carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose, small sensor that uses non-dispersive infrared (NDIR) principle to detect CO2 in the air. It has good selectivity, no oxygen dependence, and long lifespan. Built-in temperature compensation; also provides digital output and waveform output for easy use. This infrared sensor is a high-performance sensor made by combining mature infrared absorption gas detection technology with precision optical path design and sophisticated circuit design.

Carbon Dioxide Sensor CO2 Sensor MH-Z19 Features:

High sensitivity, high resolution, low power consumption

Provides multiple output methods such as UART, PWM waveform

Temperature compensation, excellent linear output

Excellent stability

Long lifespan

Anti-water vapor interference, non-poisoning

Carbon Dioxide Sensor CO2 Sensor MH-Z19 Applications:

HVAC

Indoor air quality monitoring

Carbon Dioxide Sensor CO2 Sensor MH-Z19 Parameters:

Model	MH-Z19
Detected Gas	Carbon Dioxide
Operating Voltage	4.0～5.5V DC
Average Current	17 mA (@5V supply)
Peak Current	150 mA (@5V supply)
Interface Level	3.3V
Measurement Range	Selectable within 0~1%VOL (see Table 2)
Output Signal	UART ， PWM
Warm-up Time	3min
Response Time	T90 < 45s
Operating Temperature	0～50℃
Operating Humidity	0~95%RH (non-condensing)
Weight	4 g
Lifespan	>5 years

Range and Accuracy

Gas Name	Molecular Formula	Range	Accuracy
Carbon Dioxide	CO2	0~2000ppm	±(50ppm+5% of reading)