Description:
The MH-Z19C NDIR Sensor Module offers a reliable and cost-effective solution for measuring levels. Its core design integrates mature infrared absorbing gas detection technology with precision optical and circuit design.5 The sensor is non-oxygen dependent and boasts a long lifespan, making it ideal for applications like HVAC, air purification devices, smart homes, and ventilation systems.6 It provides both UART (serial) and PWM outputs for flexible integration with microcontrollers and other systems.
Features:
Sensing Principle: Non-Dispersive Infrared (NDIR) technology.
High Performance: Gold-plated chamber for enhanced stability and lifespan.
Stability: Good long-term stability and anti-water vapor/anti-poisoning interference.
Low Consumption: Low power consumption suitable for continuous monitoring.
Linear Output: Features temperature compensation for excellent linear output.
Multiple Outputs: Supports both Serial Port (UART - TTL level 3.3V) and PWM output modes.
Self-Calibration: Includes an automatic self-calibration function (can be enabled/disabled) and supports manual zero-point calibration.
Fast Response: Optimized preheat time (reduced from its predecessor, MH-Z19B).
Specifications:
Detection Gas: CO2 (Carbon Dioxide)
Detection Range: 400−5000 ppm (Parts Per Million)
Accuracy: ±(50 ppm+5% of reading value)
Working Voltage: 5.0±0.1 V DC
Average Current: <40 mA (@5V power supply)
Peak Current: 125 mA (@5V power supply)
Interface Level: 3.3 V (Compatible with 5V)
Preheat Time: 1 min
Response Time: T90<120 s
Working Temperature: −10∘C∼50∘C
Working Humidity: 0∼95% RH (No condensation)
Lifespan: >10 years
