MH-Z19 CO2 Sensor Module - Infrared Carbon Dioxide Detector

MH-Z19 CO2 Sensor Module - Infrared Carbon Dioxide Detector

Accurately measure indoor CO2 levels with the MH-Z19 - a professional-grade NDIR infrared sensor trusted by engineers and makers worldwide for air quality monitoring, HVAC systems, and smart home projects.

Key Features

• NDIR (Non-Dispersive Infrared) technology - highly accurate and long-lasting
• Self-calibration function - low maintenance in real-world environments
• Dual output: UART (serial) and PWM - flexible for any microcontroller
• Gold-plated compact housing - durable and resistant to interference
• Includes pre-wired cable connector - ready to connect directly
• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi and more

Specifications

• Sensor Type: NDIR Infrared CO2 Sensor
• Detection Range: 0 - 5000 ppm
• Accuracy: +/- 50 ppm + 5% of reading
• Operating Voltage: 4.5V - 5.5V DC
• Current Consumption: < 150mA (peak), 40mA (avg)
• Output Interface: UART (9600 bps) + PWM
• Warm-up Time: 3 minutes
• Lifespan: > 5 years
• Operating Temperature: 0 - 50°C

Perfect For

• Indoor Air Quality (IAQ) Monitoring Systems
• Smart HVAC and Ventilation Control
• CO2 Data Loggers and Dashboards
• Arduino / ESP32 / Raspberry Pi Projects
• Greenhouse and Agriculture Monitoring
• Office and Classroom Air Quality Alerts

Order now and build smarter, healthier environments with precise CO2 detection.