Principle Introduction:
Characteristics:
Measuring range：0~5%VOL optional
Working Voltage: 4.5 V ~ 5.5V DC
Output modes: UART, analog voltage signal, PWM wave
MH-Z14 NDIR Infrared gas module, CO2 Gas sensor module, is a common type, small size sensor, 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 sensor can do temperature compensation; and it has digital output and analog voltage output. This commons type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design.

Applications :
MH-Z14 NDIR Infrared gas sensor module is applied in the HVAC, indoor air quality monitoring, industrial process, safety and protection monitoring, agriculture and animal husbandry production process monitoring.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Working voltage	4.5 V ~ 5.5V DC
Average current	< 85 mA
Interface level	3.3 V
Measuring range	0~5%VOL optional
Output signal	PWM
	UART
	0.4-2V DC
Preheat time	3min
Response Time	T90 < 90s
Working temperature	0℃ ~ 50℃
Working humidity	0~95%RH
Weight	15 g
Lifespan	>5 year
Dimension	57.5×34.7×16mm（L×W×H）

Reference Circuit :

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