Winsen MH-Z19E NDIR CO2 sensor for indoor air quality monitoring


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Approx Restocking Date: 25 to 30 Days
SKU: 1278788
  1. Model No: MH-Z19E
  2. Detection Gas: CO2
  3. Working voltage: 5.0±0.1V DC
  4. Average current: < 40mA (@5V power supply)


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Brand: Winsen
Category: Gas and Dust Sensor

MH-Z19E 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.


  1. HVAC refrigeration
  2. Air cleaner device
  3. Indoor air quality monitoring
  4. Smart home
  5. Ventilation system
  6. School


  1. High sensitivity, low power consumption
  2. Good stability
  3. Temperature compensation, excellent linear output
  4. Multiple output modes: UART, PWM
  5. Long lifespan
  6. Anti-water vapor interference, anti-poisoning

Package Includes: 

1 x Winsen MH-Z19E NDIR CO2 sensor for indoor air quality monitoring

SKU: 1278788 Category:
Model No


Detection Gas


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, see table2.)

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 ℃


5 g


> 10 years

Shipping Weight 0.007 kg
Shipping Dimensions 9 × 5 × 2 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.

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Instruction Manual

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Country Of Origin: China