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Gravity: PWM NDIR Infrared Carbon Dioxide / CO2 Sensor (400-5000 ppm)

SKU: SEN0219

DFRobot’s latest high-precision infrared Arduino CO2 sensor (SEN0219) uses NDIR technology, with a 400-5000ppm range. It offers 5-year lifespan, temperature compensation, DAC output, and easy reading via one digital port. Compatible with various MCUs and Arduino IO boards (Gravity interface, plug-and-play), it features low power, fast response, anti-water vapor interference, and stability, ideal for HVAC and indoor air quality monitoring.

Front of NDIR CO2 sensor module with USB and pins for Arduino indoor air quality monitoring.-DFRobot product sku:SEN0219 image.
  • Docs
  • Tech Specs

    • Specification

    Parameter Value
    Gas Detection Carbon Dioxide (CO₂)
    Supply Voltage DC (5.0±0.1)V
    Average Current <40mA (@5V power supply)
    Peak Current <125 (@5V power supply)
    Output Signal PWM
    Preheating Time 1min
    Response Time T90 < 120s
    Operating Temperature -10℃ - 50℃
    Operating Humidity 0 - 95% RH (no condensation)
    Measuring Range 400 - 5000 ppm
    Resolution 1ppm
    Accuracy ±(50ppm+5% reading)
    Dimension 69mm×37mm/2.72×1.46"

    Pinout

    SEN0219 Analog Infrared CO2 Sensor For Arduino Board Overview
    Num Label Description
    1 Signal Signal Output (0.4-2V)
    2 VCC +
    3 GND -

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