Application:Chamber is gold plated,High sensitivity, low power consumption,Good stability,Long lifespan
Feature:High sensitivity, Low power consumption,Good stability,Temperature compensation, excellent linear output


100% MONEY


Production Description:

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.


  • High sensitivity, Low power consumption
  • Good stability
  • Temperature compensation, excellent linear output
  • Output method: UART, PWM &etc
  • Long lifespan
  • Anti-water vapor interference, no poisoning


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

Main technical parameters:

 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


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 ℃


5 g


>10 years

1. WORLDWIDE SHIPPING (Except some countries and APO/FPO)

We provide Worldwide Shipping by DHL, Fedex, Standard shipping (China Post e-Packet) and some other shipping ways on ALL ITEMS!

2. SERVICE TRANSIT TIME is provided by the carrier.
  • Reference Delivery time (working days):
  • DHL:3-7 days
  • Fedex:3-7 days
  • China Post e-Packet : 15-35 days

Transit times may vary, particularly during the holiday season.

We suggest you choose Expedited Shipping(DHL or FedEx) to ensure the products reach your home fast & safety.

3. ORDERS PROCESSED TIMELY after the payment verification.

We do our best to process & ship all orders as soon as possible. Most orders are processed within 48 hours.


a.We only ship to confirmed order address. Your order address MUST MATCH your shipping address.

b.We accept DROP SHIPPING. You can leave us your customer’s address, when you place an order,then your customers can get the goods directly.


Tracking and secure checkout are provided for all orders. https://www.17track.net/en - this tracking website can help you track the status of your package.


Sometimes you may can't get your package within expected time, please be patient for a few more days. Because we can't control the delivery time or condition when package on shipping. Certainly, we are glad that you can contact us for help. Our goal is to make customer satisfied!

Dear valued friends,

If you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails ASAP, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. Please allow 24 business hours for us to response. And you can also call us in +86-18595618735 or email us to enquiry@winsensor.com.

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