Winsen MH-Z19E NDIR CO2 sensor for indoor air quality monitoring


MH-Z19E 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.

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It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.
HVAC refrigeration
Air cleaner device
Indoor air quality monitoring
Smart home
Ventilation system
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

Model No MH-Z19E
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), PWM
Preheat time 1 min
Response Time T90 < 120 s
Working temperature -10 ~ 50 ℃
Working humidity 0 ~ 95% RH (No condensation)
Storage temperature -20~60 ℃
Weight 5 g
Lifespan > 10 years


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