MH-Z19C Infrared Carbon Dioxide Sensor Module with 7-Pin JST Cable - UART/PWM Output
The MH-Z19C is an NDIR-based infrared COâ‚‚ sensor module providing accurate carbon dioxide concentration readings from 400 to 5000 ppm. It features UART TTL and PWM output interfaces for straightforward integration with Arduino, ESP32, Raspberry Pi, and other 5V logic microcontrollers and embedded systems.
Features
- NDIR Infrared Technology for stable, accurate CO₂ measurement from 400–5000 ppm.
- Dual Output Interfaces: UART TTL serial communication and configurable PWM signal.
- Fast Warm-Up Time under 60 seconds for rapid system readiness.
- Automatic Baseline Calibration (ABC) for long-term stability and drift compensation.
- Optimized for 5V DC operation (4.9–5.1V) with low power consumption design.
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The MH-Z19C utilizes non-dispersive infrared (NDIR) sensing technology to detect carbon dioxide molecules by measuring infrared light absorption at a specific wavelength. This principle ensures high selectivity against other gases and provides stable, reliable readings over extended periods. The module includes internal signal conditioning and temperature compensation for consistent performance across its operating range.
Engineered for seamless integration, the sensor outputs data via a simple UART TTL protocol or a pulse-width modulated (PWM) signal, making it compatible with a wide range of microcontrollers and industrial data loggers. Its compact form factor and pre-attached 7-pin JST connector facilitate quick prototyping and deployment in space-constrained applications.
Additional Information
| Weight | 0.005 kg |
|---|---|
| Dimensions | 4 × 5 × 3 cm |
