Reference: RBD-2835
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The MH-Z19E CO₂ Sensor Module is a compact, intelligent gas detection sensor based on NDIR (Non-Dispersive Infrared) technology. Designed for high accuracy and long-term stability, it can measure CO₂ concentrations in the 400–5000 ppm range, making it suitable for air quality monitoring, ventilation control, and smart home systems.
This sensor features temperature compensation, excellent linear output, and dual interfaces (UART & PWM) for flexible integration. It is resistant to water vapor interference, has no oxygen dependency, and offers a long operational lifespan, making it ideal for professional and DIY air quality projects.
High sensitivity & reliability with NDIR technology
Stable and accurate with built-in temperature compensation
Measurement Range: 400–5000 ppm CO₂
Output Interfaces: UART (3.3V TTL, 5V compatible) and PWM waveform
Long lifespan, low power consumption, and excellent stability
Fast Response: T90 < 120s
Anti-interference: Resistant to water vapor, no poisoning
Two versions available: Pin or terminal connector
Model: MH-Z19E (successor of MH-Z19D, same specs)
Detection Gas: Carbon Dioxide (CO₂)
Power Supply: DC 5.0V ±0.1V
Average Current: < 40mA @ 5V
Peak Current: 125mA @ 5V
Interface Level: 3.3V (compatible with 5V logic)
Measurement Range: 400–5000 ppm
Output Signals: UART (TTL 3.3V), PWM
Warm-Up Time: 1 minute
Response Time: T90 < 120s
Operating Temperature: –10℃ to +50℃
Storage Temperature: –20℃ to +60℃
Humidity Range: 0–95% RH (non-condensing)
HVAC monitoring and control
Indoor air quality measurement
Fresh air and purification systems
Smart home CO₂ monitoring
Educational and research projects
School and office environmental safety
1 × MH-Z19E CO₂ Infrared Sensor Module
Combining NDIR sensing technology, UART/PWM outputs, and long-term stability, the MH-Z19E is one of the most popular and reliable CO₂ sensors for air quality monitoring. Whether for DIY smart home projects, school labs, or industrial HVAC systems, this module ensures accurate, dependable CO₂ measurement.
Ensure safe and healthy air quality monitoring with the MH-Z19E CO₂ Sensor Module – compact, accurate, and easy to integrate!
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The MH-Z19E CO₂ Sensor Module is a compact, intelligent gas detection sensor based on NDIR (Non-Dispersive Infrared) technology. Designed for high accuracy and long-term stability, it can measure CO₂ concentrations in the 400–5000 ppm range, making it suitable for air quality monitoring, ventilation control, and smart home systems.
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