MH-Z19 Infrared CO2 Sensor Module for CO2 monitor

(1 customer review)

Out of stock

Approx Restocking Date: 25 to 30 Days
SKU: 51479
  1. Operating voltage: 3.6 V ~ 5.5V DC
  2. Average current: < 18 mA
  3. High sensitivity, high resolution.
  4. Low energy consumption.
  5. Output mode: UART and PWM wave.
  6. Temperature compensation, excellent linear output.
  7. Good stability and Long lifespan.
  8. Anti-interference of water vapor.


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Out of stock

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1 Year Warranty
15 Days Warranty
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Category: Gas and Dust Sensor
Tags: Sensor, Air Sensor, Gas Sensor, MH-Z19, CO2 Sensor, Carbon Dioxide Sensor, Infrared Gas Sensor

This is MH-Z19 Infrared CO2 Sensor Module for CO2 monitor. The MH-Z19 NDIR infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO 2 in the air, with good selectivity, non-oxygen dependent and long life.

The built-in temperature sensor can do temperature compensation; it has digital output an analog voltage output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design, and superior circuit design.

MH-Z19 NDIR infrared gas module is widely used in the HVAC refrigeration and indoor air quality monitoring.

Features :

  1. High sensitivity, high resolution.
  2. Low energy consumption.
  3. Output mode: UART and PWM wave.
  4. Temperature compensation, excellent linear output.
  5. Good stability.
  6. Long lifespan.
  7. Anti-interference of water vapor.
  8. No poisoning.

Package Includes :

1 x MH-Z19 Infrared CO2 Sensor Module.
1 x Connecting Cable.
Operating Voltage (VDC)

3.6 to 5.5

Average Current(mA)


Interface Level


Measuring Range

0~5%VOL optional

Output Signal


Preheat Time(min)


Preheat Time


Operating Temperature (°C)

0 to 50



Dimensions (LxWxH) mm
Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 7 × 6 × 4 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 1 review

5.0 overall

Add a review

  1. srivastava.mukul (verified owner)

    Nice product.. Functioning well


MH-Z19 Datasheet

Questions and answers of the customers

    What is the maximum Co2 value in PPM the sensor ca... Read more
  1. 0 votes
    Q What is the maximum Co2 value in PPM the sensor can detect? answer now
    Asked by atharvajagtapmit on September 21, 2022 3:10 pm

    The effectively measuring range of this sensor ... Read more

Only registered users are eligible to enter questions
Country Of Origin: China

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