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Varenr. SEN0220

Gravity: UART Infrared Carbon Dioxide Sensor (0-50000 ppm)


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  • Product wiki 
  • Introduction

    DFRobot released its latest wide range Arduino infrared CO2 sensor, which effective range is up to 0~50000ppm. This sensor is based on non-dispersive infrared (NDIR) technology and has good selectivity and oxygen-free dependency. It integrates temperature compensation and support UART communication mode. Most importantly, the product is easy to use; it is compatible with all types of microcontrollers with UART port, like Arduino, Raspberry Pi and other microcontrollers. Besides, it has a long service life, up to 5 years!

    In addition, this UART Infrared CO2 Sensor is a high-performance sensor that combines technology of mature infrared absorption gas detection with precision optical circuit design as well as sophisticated circuit design. It has characteristics such as wide range detection, high sensitivity, high resolution, low power consumption, fast response, anti-water vapor interference, no poisoning, high stability and long life.

    It can be widely used in HVAC refrigeration and indoor air quality monitoring, industrial process and safety monitoring, agricultural and animal husbandry production process monitoring, etc..

    DFRobot LCD Keypad Shield with UART Infrared CO2 Sensor

    This is a 0~50000ppm wide range CO2 sensor with UART communication port. It supports Arduino, Raspberry Pi and other microcontrollers. In addition, we also have a 0~5000 ppm high precision infrared sensor with Gravity Analog interface, more easy to use: Gravity Analog Infrared CO2 Sensor (0~5000ppm).

    Gravity CO2 Sensor Selection Guide
    Product Name Gravity:Analog Electrochemistry CO2 Sensor Gravity:Analog IR CO2 Sensor Gravity:UART IR CO2 Sensor
    SKU SEN0159 SEN0219 SEN0220
    Operation Voltage 3.7~5V 4.5~5.5V 4.5~5.5V
    Gravity: Analog
    3P Header Digital Output(Alarm):0~VCC Level
    Gravity: Analog 
    (Analog Output 0.4~2V)
    Gravity: UART
    (0~3.3V Level)
    Measurement Principle
    (Solid electrolyte battery principle)
    NDIR(non-dispersive infrared) NDIR(non-dispersive infrared)
    Measurement Range 0~10000 ppm 0~5000 ppm 0~50000 ppm
    Accuracy ±100ppm@400ppm ±(100ppm + 6% readings) ±(100ppm + 6% readings)
    Response Time <20s <90s <30s
    Average Power <1W <430mW@5V <430mW@5V
    Operation Temperature -20℃~50℃ 0℃~50℃ 0℃~50℃
    Operation Humidity 0~95% RH (No condensation) 0~95% RH (No condensation) 0~95% RH (No condensation)
    Lifespan >1 years >5 years >5 years
    32*42 mm 37*69 mm 21*27.1 mm
    1.Large Range
    2.Adjustable Alarm Threshold
    3.Fast Response
    4.Analog Output
    1.High Accuracy
    2.Long Lifespan
    3.Auto Temperature Compensation
    4.Water Vapor Interference Resistance
    5.Ananglog Output
    1.High Accuracy
    2.Large Range
    3.Long Lifespan
    4.Auto Temperature Compensation
    5.Water Vapor Interference Resistance
    6.3.3V UART Output


  • High sensitivity High resolution
  • Low power consumption
  • Excellent stability
  • Temperature compensation
  • Excellent linear output
  • High cycle life
  • Anti-water vapor interference
  • No poisoning
  • Need 5V power supply, even you are using a 3.3V microcontroller, like Genuino 101/ Raspberry Pi .etc.
  • Specification

  • Gas Detection: Carbon Dioxide (CO2)
  • Operating Voltage: 4.5 ~ 5.5V DC
  • Average Current: <85mA
  • UART output
  • Measuring Range: 0 ~ 50000ppm
  • Accuracy: ± (50ppm + 5% reading)
  • Preheating Time: 3min
  • Response Time: T90 < 30s
  • Operating Temperature: 0 ~ 50 ℃
  • Operating Humidity: 0 ~ 95% RH (no condensation)
  • Service Life: >5 years
  • Board Dimension : 21 * 27.11 mm/ 0.83 * 1.06 inches
  • Weight: 42g
  • Shipping List

  • UART Infrared CO2 Sensor Probe (0-50000ppm) x1
  • Sensor Converter Board x1
  • 6-Pin Sensor Cable x1
  • PH2.0 Gravity UART Cable x1
  • XH2.54 4-Pin header x1
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