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    NDIR CO2 Gas Sensor, 0 to 2000/ 5000 ppm

    Lower cost NDIR CO2 sensor for sale online. The carbon dioxide sensor with wide range measuring range from 0 to 5000 ppm, working voltage 5VDC, UART/ PWM two output signal can be chosen. Infrared carbon dioxide sensors are widely used in various occasions where flammable and explosive gases exist.
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    Delivery date: 6-12 days

    Factory price NDIR CO2 gas sensor with 150 mA peak current, short preheat time 10s, the working temperature is -10℃ ~ 50℃. High quality carbon dioxide gas sensor has the advantages of no oxygen dependence, high sensitivity, low power consumption, and long life.


    • High sensitivity, Low power consumption
    • Good stability
    • Temperature compensation, excellent linear output
    • Output method: UART, PWM
    • Long lifespan
    • Anti-water vapor interference, no poisoning


    • Model: ATO-ICDS-Z16
    • Detection gas: CO2
    • Working voltage: 5VDC
    • Average current: < 85mA
    • Peak current: 150mA
    • Interface level: 3.3V (5V compatible)
    • Measuring range: 0~50000 ppm range selectable (max. 150000ppm can be extended)
    • Output signal: UART/ PWM
    • Preheat time: 10s
    • Response time: T90 < 30s
    • Working temperature: -10℃ ~ 50℃
    • Working humidity: 0~95% RH (no condensation)
    • Storage temperature: -20℃ ~ 60℃

    Measuring range and accuracy

    Target gas Measuring range Solution Accuacy Mark
    Carbon Dioxide
    0~2000 ppm 1 ppm ± (50 ppm+5% reading value) Temperature compensation
    0~5000 ppm
    0~10000 ppm
    0~5% VOL < 1% VOL reading value
    0~10% VOL
    0~15% VOL

    Dimension (mm)

    NDIR CO2 Gas Sensor dimension

    Pin Definition

    NDIR CO2 gas sensor pin definition

    PIN NO. Description
    PIN 4 Vin (Voltage Input)
    PIN 3 GND
    PIN 2 NC
    PIN 7 PWM
    PIN 1 HD (Zero Calibration, Keep Low Electrical Level for More Than 7 Seconds)
    PIN 5 UART (RXD) TTL electrical Level Data Input
    PIN 6 UART (TXD) TTL Electrical Level Data Output

    Tips: What is NDIR CO2 Gas Sensor?

    The infrared carbon dioxide sensor uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air. It has the characteristics of good selectivity, no oxygen dependence, and long life. It also has serial output and PWM output, which is convenient to use. The principle of non-dispersive infrared (NDIR) detects CO2 in the air and is widely used in various occasions where flammable and explosive gases exist.

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