Serial Port UART PWM Carbon Dioxide CO2 Detection Infrared Gas Sensor Module MH-Z19E
Product Details:
The MH-Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.
Sensor characteristics:
- High sensitivity, low power consumption
- Excellent stability
- Temperature compensation, excellent linear output
- Provide serial port (UART), PWM waveform and other output methods
- long lasting
- Anti-water vapor interference, no poisoning
Application:
- HVAC equipment
- Air quality monitoring equipment
- Fresh air system
- Air purification equipment
- Smart home
- school
Parameters:
Product model: MH-Z19E
Detection gas: carbon dioxide
Power supply voltage: DC(5.0±0.1)V
Average current: <40mA (@5V power supply)
Peak current: 125 mA (@5V power supply)
Interface level: 3.3V (compatible with 5V)
Measuring range: 400~5000ppm optional
Output signal: serial port (UART) (TTL level 3.3V); PWM
Warm-up time: 1min
Response time: T90 <120s
Working temperature: -10℃～50℃
Storage temperature: -20℃～60℃
Working humidity: 0～95%RH (non-condensing)
Resources:
2. MH-Z-CO2-Sensor GitHub library
3.