The MH-Z19E Infrared CO2 Sensor Module is an advanced, high-performance sensor designed to detect carbon dioxide (CO2) levels in the air. This sensor uses Non-Dispersive Infrared (NDIR) technology, a reliable method known for its high selectivity and accuracy in detecting CO2 without interference from other gases. This technology is not dependent on oxygen, ensuring consistent performance even in oxygen-deficient environments.
The MH-Z19E has built-in temperature compensation, which helps maintain accurate readings even when the ambient temperature fluctuates. It is also highly energy efficient, consuming minimal power during operation.
This sensor has two output options: UART (Universal Asynchronous Receiver-Transmitter) and PWM (Pulse Width Modulation). The UART interface provides a serial communication output that allows integration with various microcontrollers and devices, while the PWM output provides a direct signal that can be used to control systems based on CO2 levels.
With a long operating life (over 10 years), the MH-Z19E is suitable for continuous monitoring applications in various environments, including HVAC systems , air quality monitoring systems, and industrial setups. The sensor is housed in a rugged, compact module, making it easy to integrate into systems where space is limited.
With its ability to detect CO2 over a measurement range of 400-10,000ppm, the MH-Z19E is ideal for applications requiring air quality monitoring and control, such as smart home systems, air purification systems, schools, and office buildings. Its wide measurement range and high selectivity also make it an excellent choice for research and development applications where precision is critical.
Features
- Non-Dispersive Infrared (NDIR) CO2 detection
- Built-in temperature compensation for stable readings
- UART and PWM output for easy integration with microcontrollers
- High selectivity with no interference from other gases
- Long service life—more than 10 years
- Wide detection range of 400–10000ppm
- Low power consumption for efficient operation
Included
- 1x MH-Z19E Infrared CO2 Sensor Module
- 1x Connection Cable
Applications
- HVAC (Heating, Ventilation, and Air Conditioning) systems
- Air quality monitoring equipment
- Fresh air systems
- Air purification equipment
- Smart home applications
- Schools
Specifications
| Specification | Parameter |
|---|---|
| Product Model | MH-Z19E |
| Detection Gas | Carbon Dioxide (CO2) |
| Supply Voltage | DC (5.0 ± 0.1)V |
| Average Current | Less than 40mA (@5V supply) |
| Peak Current | 125mA (@5V supply) |
| Interface Level | 3.3V (compatible with 5V) |
| Measuring Range | 400-5000ppm (optional) |
| Output Signal | Serial Port (UART TTL 3.3V), PWM |
| Response Time | T90 < 120s |
| Working Temperature | -10°C ~ 50°C |
| Storage Temperature | -20°C ~ 60°C |
| Humidity Range | 0–95% RH (non-condensing) |
| Weight | 5g |
| Service Life | >10 years |
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