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    Infrared CO2 Sensor Module, UART/ PWM output

    5 out of 5 based on 1 reviews | Write a review
    Resonale price Infrared CO2 sensor module with UART/ PWM two output signal for selection, available measuring range 400~2000 ppm/ 400~5000 ppm/ 400~10000 ppm, working voltage 5VDC. The NDIR CO2 sensor can be used to monitor production processes in smart homes, agricultural greenhouses and animal husbandry.
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    Delivery date: 6-12 days

    High performance carbon dioxide sensor has less than 40 mA average current, preheat time 1min. The infrared CO2 sensor has the advantages of anti-water vapor interference, no poisoning, high sensitivity, low power consumption, and long service life.


    • Chamber is gold plated
    • High sensitivity, low power consumption
    • Good stability, long lifespan
    • Temperature compensation, excellent linear output
    • Multiple output modes: UART, PWM
    • Anti-water vapor interference, anti-poisoning


    • Model: ATO-ICDS-Z19C
    • Detection gas: CO2
    • Working voltage: 5VDC
    • Peak current: 125 mA
    • Average current: < 40mA
    • Interface level: 3.3V
    • Measuring range: 400~10000 ppm
    • Output signal: UART/ PWM
    • Preheat time: 1 min
    • Response time: T90 < 120s
    • Working temperature: -10℃ ~ 50℃
    • Working humidity: 0~95% RH (no condensation)
    • Storage temperature: -20℃ ~ 60℃
    • Dimension (L*W*H): 57.5*34.7*17mm

    Measuring range and accuracy

    Target gas Measuring range Resolution Accuacy
    Carbon Dioxide
    400~2000 ppm 1 ppm ± (50 ppm+5% reading value)
    400~5000 ppm
    400~10000 ppm

    Dimension (mm)

    Infrared CO2 sensor module dimension 

    Tips: How Often Should A CO2 Sensor Be Calibrated?

    The more accurate the CO2 reading required, the more often it should be calibrated. However, CO2 sensor staff typically recommends customers to place their sensors or devices on a regular calibration cycle like their important devices and equipment.

    For specific industries we recommend the following calibration cycles and methods:

    • Scientific Experimentation – zero calibration before each test
    • Safety – zero calibration at least annually
    • Beverage/ Restaurant - zero with nitrogen at least annually
    • Greenhouse – zero with nitrogen after each growing cycle
    • Manufacturing – zero with nitrogen at least annually
    • Indoor Air Quality – ABC or fresh air as desired

    Existing reviews of Infrared CO2 Sensor Module, UART/ PWM output
    Accurate NDIR CO2 sensor!
    I love this CO2 sensor!! Amazing accuracy! Can be used in any room in your house to gauge co2!! My plants are better now that I have co2 accuracy! Thank you ATO for the product.
    From: Mar | Date: 29/06/2022
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