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    Picture of CO2 Air Quality Sensor, 400-5000ppm, RS485 Output Picture of CO2 Air Quality Sensor, 400-5000ppm, RS485 Output Picture of CO2 Air Quality Sensor, 400-5000ppm, RS485 Output

    CO2 Air Quality Sensor, 400-5000ppm, RS485 Output

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    SKU: SUCH-CO2-FS00820B
    $188.54
    ● CO2 air quality sensor for ventilation control ● 400-5000ppm range with 1ppm resolution ● Modbus-RS485 output for HVAC integration ● Duct-mounted design for fresh air systems
    🚚 Free shipping
    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    This CO2 air quality sensor is a duct-mounted carbon dioxide detector for real-time indoor air quality and ventilation monitoring. It measures 400-5000ppm CO2 with 1ppm resolution, Modbus-RS485 output, DC 10-30V power supply, and durable ABS housing. Suitable for HVAC systems, fresh air ventilation, building automation, supermarkets, subway stations, and livestock farming.

    Feature

    CO2 air quality sensor feature

    • Duct-mounted air quality sensors are specifically designed for measuring air quality within ducts. Featuring an insertable structure combining ducting and flanges, they facilitate easy installation and integration according to specific site conditions.
    • The CO₂ air quality sensor offers a wide measurement range, high accuracy, and excellent linearity, supporting RS485 digital output.
    • The SUCH air quality sensor rapidly detects minute concentration changes in the air, enabling real-time visualization of indoor air quality. Its strong compatibility facilitates seamless integration into various ventilation, fresh air, and building automation systems.

    Dimension (unit: mm)

    CO2 air quality sensor dimension

    Wiring

    Wire Color Description
    Red VCC, Power Input DC 24V
    Black GND, Ground Terminal
    Blue Modbus-A V1 IOUT1
    Green Modbus-B V2 IOUT2
    Specs
    CO₂ Range 400-5000ppm
    CO₂ Resolution 1 ppm
    CO₂ Accuracy ±(50 ppm+3% of reading)
    Operating Voltage DC 10V-30V (Standard 24V)
    Operating Current ≤200mA
    Preheating Time 3min
    Output Mode Modbus-RS485
    Material ABS flame-retardant shell
    Installation Method Pipeline type
    Operating Temperature -10°C~50°C
    Operating Humidity 0%RH~95%RH (Non-condensing)
    Storage Temperature -30°C~60°C
    Storage Humidity 0%RH~99%RH (Non-condensing)
    CO₂ Lifetime (in Air) 10 years
    Application
    CO2 air quality sensor for supermarket

    Supermarket

    CO2 air quality sensor for subway

    Subway

    CO2 air quality sensor for livestock farming

    Livestock Farming

    FAQ
    ❯

    A carbon dioxide air quality sensor measures the concentration of carbon dioxide in the air, typically expressed in parts per million (ppm). It helps assess ventilation efficiency, indoor air quality, and potential health risks associated with elevated carbon dioxide levels in homes, offices, factories, or agricultural environments.

    ❯

    Most CO₂ sensors achieve an accuracy of ±(50 ppm + 5%) under standard conditions. High-end non-dispersive infrared (NDIR) sensors offer long-term stability, low drift characteristics, and strong resistance to interference from humidity and temperature fluctuations.

    ❯

    To ensure detection accuracy, air quality sensors should be mounted at breathing height, away from doors, windows, air conditioning units, and direct sunlight. Avoid installation in corners or enclosed spaces to prevent stagnant air accumulation.

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