Winsen - MH-Z19C NDIR CO2 Module (Terminal type)

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MH-Z19C NDIR CO2 Module (Terminal type)


MH-Z19C 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. 

Main parameters

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)
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 5g Lifespan > 10 years

Detection range and Accuracy

Detection Gas - Carbon Dioxide
Formula - CO2 Detection
Range - 400~5000ppm
Resolution - 1ppm
Accuracy - ± (50ppm+5% reading value)