Winsen MH-Z16 is a compact and highly sensitive infrared CO2 gas module that utilizes advanced NDIR technology to accurately detect carbon dioxide levels in the air. With its exceptional stability and temperature compensation capabilities, this sensor provides reliable and precise measurements. The MH-Z16 offers flexible output options, including UART and PWM, allowing for easy integration with various microcontrollers or data acquisition systems.
Winsen MH-Z16 is a compact and highly sensitive infrared CO2 gas module that utilizes advanced NDIR technology to accurately detect carbon dioxide levels in the air. With its exceptional stability and temperature compensation capabilities, this sensor provides reliable and precise measurements. The MH-Z16 offers flexible output options, including UART and PWM, allowing for easy integration with various microcontrollers or data acquisition systems.
Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
MH-Z16
Infrared CO2 Gas Module
User’s Manual
(Version: 2.6)
Issue Date: 2022.04.24
Zhengzhou Winsen Electronics Technology CO., LTD
Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
Statement
This manual’s copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written
permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also
can’t spread through electronic, copying, record ways.
Thanks for purchasing our products. In order to have customers use it better and reduce the faults caused by
misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users
disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be
responsible for the loss.
The specific such as color, appearance, sizes &etc., please in kind prevail.
We are devoting ourselves to products development and technical innovation, so we reserve the right to
improve the products without notice. Please confirm it is the valid version before using this manual. At the
same time, users’ comments on optimized using way are welcome.
Please keep the manual properly, in case you need help during the usage in the future.
Zhengzhou Winsen Electronics Technology CO., LTD.
Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
MH-Z16 Infrared CO2 Gas Module
1. Profile
MH-Z16 NDIR Infrared gas module is a common type, small size sensor, 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 digital output and PWM wave output. This common type infrared gas sensor is developed by the
tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit
design.
2. Main features
●High sensitivity, Low power consumption
●Good stability
●Temperature compensation, excellent linear output
●Output method: UART, PWM
●Long lifespan
●Anti-water vapor interference, no poisoning
3. Application
●animal husbandry production ● educational instruments ● indoor air quality monitoring equipment
●HVAC equipment ●air purification equipment
4. Main technical parameters
Model No.
MH-Z16
Detection Gas
CO2 gas
Working voltage
DC(5.0±0.1V)
Average current
<85mA (@5V power supply)
Peak current
150mA (@5V power supply)
Interface level
3.3 V (5V compatible)
Measuring range
0~50000ppm range selectable
( max 150000ppm can be extended)
Output signal
Serial Port (UART )(TTL 3.3V)
PWM
Preheat time
10s
Response Time
T90 < 30s
Working temperature
-10℃ ~ 50℃
Working humidity
0~95%RH (no condensation)
Storage temperature
-20℃ ~ 60℃
Weight
<21 g
Lifespan
>10 years
Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
Target Gas
Measuring Range
Solution
Accuracy
Mark
Carbon
Dioxide
(CO2)
0~2000ppm
1ppm
±（50ppm＋5% reading value）
Temperature compensation
0~5000ppm
0~10000ppm
0~5%VOL
<1%vol reading value
0~10% VOL
0~15% VOL
5. Structure
6. Pin Definition
PIN No.
Description
PIN 4
Vin (Voltage Input)
PIN 3
GND
PIN 2
NC
PIN 7
PWM
PIN 1
HD (Zero calibration, keep low electrical level for
more than 7 seconds)
PIN 5
UART（RXD） TTL electrical level data input
PIN 6
UART（TXD） TTL electrical level data output
Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
7. Cautions
7.1 Please avoid the pressure of its gilded plastic chamber from any direction, during welding, installation, and
use.
7.2 When placed in small space, the space should be well ventilated, especially for diffusion window.
7.3 The module should be away from heat source, and avoid direct sunlight or other heat radiation.
7.4 The sensor should be calibrated regularly and the calibration cycle is recommended for no more than 6
months.
7.5 Do not use the sensor in the high dusty environment for long time.
8.6 To ensure the normal work, the power supply must be within DC (5.0±0.1)V rang, the power current must
be not less than 150mA. Out of this range, it will result in the failure of the sensor. (The concentration output is
low or the sensor cannot operate properly)
7.7 During manual zero calibration, the sensor must work in stable gas environment (400ppm) for over 20
minutes.
Zhengzhou Winsen Electronics Technology Co., Ltd
Add: No.299, Jinsuo Road, National Hi-Tech Zone,
Zhengzhou 450001 China
Tel: +86-371-67169097/67169670
Fax: +86-371-60932988
E-mail: sales@winsensor.com
Website: www.winsen-sensor.com
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Winsen MH-Z16 is a compact and highly sensitive infrared CO2 gas module that utilizes advanced NDIR technology to accurately detect carbon dioxide levels in the air. With its exceptional stability and temperature compensation capabilities, this sensor provides reliable and precise measurements. The MH-Z16 offers flexible output options, including UART and PWM, allowing for easy integration with various microcontrollers or data acquisition systems.
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