Winsen MH-Z19C NDIR CO2 Sensor for HVAC and IAQ


Winsen MH-Z19Z19C NDIR CO2 Sensor infrared gas 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 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
Chamber is Gold-plated
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-Z19C
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 400~5000ppm(optional)
Output Signal UART (TTL level 3.3V), PWM
Preheat Time 1 min
Response Time T90 < 120 s
Length (mm) 33
Width (mm) 19.7
Height (mm) 8.5
Weight (gm) 5


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