This 10000ppm MH-Z19C co2 Sensor detects carbon dioxide Co2. 10000ppm MH-Z19C CO2 sensor has high sensitivity, high resolution, and also low power consumption. Although MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a generic type, small sensors, using nondispersive infrared (NDIR) principle to detect the air in the presence of CO2, with good selectivity and no oxygen dependence and long service life.
Datasheet 
https://www.winsen-sensor.com/d/files/manual/mh-z19c.pdf?searchid=4439

Hence built-in temperature compensation, with digital output and waveform output, easy to use. The sensor is a high-performance sensor that is combined with the mature infrared absorption gas detection technology and the precise optical path design and the excellent circuit design.

Sensor characteristics High sensitivity, high resolution, low power consumption Provide UART, PWM waveform, such as a variety of output mode Temperature compensation, excellent linear output Excellent stability Long service life Anti-water vapor interference, not poisoning Main application Can be widely used in HVAC refrigeration and indoor air quality monitoring. In addition New MH-Z19 MH-Z19C Infrared CO2 Sensor Module Carbon Dioxide Gas Sensor Suitable for CO2 Monitor.

Features:

1. High sensitivity, high resolution, also low power consumption
2. Provide UART, PWM waveform and other output methods
3. Temperature compensation, excellent linear output
4. Excellent stability
5. Long life
6. Water vapor interference, not poisoning

Specifications:

• Product Model: MH-Z19C
• Detection gas: carbon dioxide 
• Operating voltage: 4.5 ~ 5.5V DC
• Average current: <60mA ( 5V supply)
• Peak current: 150 mA  (5V supply)
• Interface level: 3.3V
• Measurement range: 0 ~ 1% VOL range optional 
• Output signals: UART, PWM, analog output (default 0.4 ~ 2V)
• Warm-up time: 3min
• Response time: T90 <120s
• Operating temperature: 0 ~ 50 ℃
• Operating humidity: 0 ~ 95% RH (non-condensing)
• Board size: 32.17x19.7x5.25mm
• Weight: 5 g
• Life expectancy: > 5 years

Package Includes:

1 x MH-Z19C Co2 Sensor Module