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CO2-Sensor MH-Z19C Winsen NDIR
inkl. MwSt.
zzgl. Versandkosten
Item is in stock.  

Latest version of the Winsen infrared gas module sensor that uses the non-dispersive infrared principle (NDIR) to detect the concentration of CO2 in the air (IAR: Indoor air quality). The sensor is characterized by good selectivity. It has built-in temperature compensation and outputs the data via a UART (3.3V and 5V compatible) or as a PWM signal.This makes it easy to integrate into any microcontroller application (Arduino, Raspberry Pi, ESP8266/ESP32 etc.).
Ideal for HVAC applications: heating, ventilation, and air conditioning.

Compared to the previous models (MH-Z19/MH-Z19A and MH-Z19B), the preheating time and power consumption have been reduced.
The sensor calibrates itself every 24 hours (can be switched on and off by command), but a zero point calibration can also be activated manually.

  • Detection: Carbon dioxide
  • Undocumented measured value: temperature (byte 4 of the response to 0x86)
  • Operating voltage: 5.0 V DC ±0.1 V
  • Average current consumption: < 40 mA (@ 5 V)
  • Peak current: 120 mA (@ 5 V)
  • Interface Level: 3.3 V (compatible with 5 V)
  • Measuring range: 400 ... 5000 ppm
  • Response time T90 <120 s
  • Preheating time: 1 minute
  • Operating temperature: -10 ... 50 C
  • Operating humidity: 0 ... 90% RH (no condensation)
  • Weight: 5 g
  • Dimensions: approx. 33 20 9 mm
Example: CO2-Guard

Download data sheet (PDF)

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*All prices are inclusive VAT (only within the EU) plus shipping costs. For shipments to third countries of the EU, the net price is shown on the invoice and there may be customs duties and taxes apply in the destination country, which are to be paid by the buyer on-site.