MH-Z19C NDIR CO2 Module

In Stock

MH-Z19C NDIR CO2 Module

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.




  • HVAC refrigeration
  • Air cleaner device
  • Indoor air quality monitoring
  • Smart home
  • Ventilation system School


  • 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 3.3V (Compatible with 5V)
Detection range 400~10000ppm (optional)
Output Signal Serial Port (UART) (TTL level 3.3V)
Preheat Time 1 min
Response Time T90 <120s
Working Temperature -10 ~ 50℃
Working Humidity 0 ~95% RH (No condensation)
Storage Temperature -20~60 ℃
Weight 5g
Life Span >10 years


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