Application:​Widely used for industrial field instrumentation, industrial-process control and safety protection.
Feature:High Sensitivity and resolution, low power consumption,Output method: UART, analog voltage output signal, etc.


100% MONEY


Production Description:
MH-712B is a universal type intelligent sensor to detect CO2 in air taking advantages of non-dispersive infrared (NDIR) principle. With good selectivity, no oxygen dependence, stable performance and long lifespan features, MH-712B also has built-in temperature compensation feature. It is a compact and high-performance sensor based on infrared absorption of gas detection technology, micro-machining and sophisticated circuit design.

  • High Sensitivity and resolution, low power consumption
  • Output method: UART, analog voltage output signal, etc.
  • Quick response
  • Temperature compensation, excellent linear output
  • Excellent stability, Long lifespan
  • Anti-poisons, anti-vapor interference

Widely used for industrial field instrumentation, industrial-process control and safety protection.

Main technical parameters:

Product Model


Target Gas


Working Voltage

4.5 V ~ 5.5V DC

Average Current

< 100mA

Interface Level


Measurement Range

0~5%VOL optional (view table 2)

Output Signal


0.4-2V DC

Warm-up Time

< 2min

Response Time

T90 < 30s

Working Temp.

-40℃ ~ 70℃

Working Humidity

0 ~ 95%RH, Non-condensing






>5 years

Protected Class


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.

Thank you for your support, I hope everyone has a pleasant business trip in our store, and welcome you to come next!

If you buy more quantity, please contact us.

Buy multiple products by the "Add to cart" we will make the discount for you.