Winsen MH-Z14A NDIR CO2 sensor 0-5000ppm

Weight: Help
16 g

Precise carbon dioxide sensor.

Product is retired

Replaced by: CO2 sensor - MH-Z1311A, 0-2000 ppm

Product has replacement: CO2 sensor - MH-Z1311A, 0-2000 ppm
Tags: NDIR, CO2

CO2 concentration detector in NDIR technology

You’re probably wondering what an NDIR sensor is. In Wikipedia we read that it is nondispersive infrared sensor. Nondispersive - without element that splits light into components. There is no prism or diffraction grating. The NDIR sensor is a spectroscopic sensor that uses a light source and usually an additional optical filter. The point is to choose a very narrow spectral range that most closely matches the absorption area of the gas. Any gas absorbs light at different wavelengths in a different way. Based on this, we can identify the gas and estimate its concentration.


  • Manufacturer: Winsen
  • Model: MH-Z14A
  • Output:
    • Serial UART (TTL)
    • PWM
    • Analog (0.4 - 2V)
  • Range (%): 0 - 5%
  • Range (ppm): 0 - 5000 ppm
  • Accuracy: ±(50ppm +3% reading value)
  • Supply voltage: 4.5 V - 5.5V DC
  • Current consumption (average): <60mA (@5V)
  • Current consumption (peak): 150mA (25V)
  • Logic: 3.3V (5V compatible)
  • Work temperature: 0 - 50C
  • Weight: 15g
  • Lifespan: >5 lat



Sensor Manual v1.2