[shortdesc]
Application:Smart home,Air cleaner device,Indoor air quality monitoring,Ventilation system
Feature:High sensitivity, low power consumption,Good stability,Temperature compensation, excellent linear output
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Production Description:
MH-Z19D NDIR infrared gas module is a common type, small size sensor, pins type or terminal type, 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 compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.
Feature:

High sensitivity, low power consumption
Good stability
Temperature compensation, excellent linear output
Multiple output modes: UART, PWM
Long lifespan
Anti-water vapor interference, anti-poisoning

Application:

Smart home
Air cleaner device
Indoor air quality monitoring
Ventilation system

Main technical parameters:

Model No.	MH-Z19D
Detection Gas	CO2
Working voltage	5.0±0.1V DC
Average current	<40mA (@5V power supply)
Peak current	125mA (@5V power supply)
Interface level	3.3 V(Compatible with 5V)
Detection Range	400~10000ppm(optional, see table2.)
Output signal	Serial Port (UART)(TTL level 3.3V)
Output signal	PWM
Preheat time	1 min
Response Time	T90 <120s
Working temperature	0 ~ 50℃
Working humidity	0 ~95% RH (No condensation)
Storage temperature	-20~60 ℃
Weight	5 g
Lifespan	> 5 years

2 pcs MH-Z19D NDIR CO2 Module