MH-Z19 Infrared CO2 Sensor Module - UART/PWM Output
The MH-Z19 is a compact NDIR (Non-Dispersive Infrared) CO2 sensor module offering UART serial and PWM output interfaces, compatible with 3.3V/5V microcontrollers like Arduino, ESP32, and Raspberry Pi for precise indoor air quality monitoring.
Features
- NDIR infrared sensing principle for accurate CO2 detection up to 5000 ppm.
- Dual output modes: UART serial communication and PWM pulse width.
- Built-in temperature sensor for automatic thermal compensation.
- Low power operation: 3.6V to 5.5V DC with average current under 18 mA.
- Compact form factor with pre-attached cable for easy system integration.
Out of stock
The MH-Z19 module employs a mature NDIR (Non-Dispersive Infrared) absorption detection method, providing selective measurement of carbon dioxide concentration with minimal cross-sensitivity to other gases. Its precision optical path and integrated signal conditioning circuit ensure stable, linearized output over the sensor’s operational lifespan.
Designed for reliable long-term monitoring, the module features automatic temperature compensation via an onboard sensor to maintain accuracy across environmental changes. The anti-interference design minimizes errors from water vapor, making it suitable for HVAC, building automation, and indoor air quality assessment systems.
Additional Information
| Weight | 0.006 kg |
|---|---|
| Dimensions | 7 × 6 × 4 cm |
