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    Picture of Indoor Air Quality Sensor, Temp & Hum/O2/TVOC/CO2/CH2O Picture of Indoor Air Quality Sensor, Temp & Hum/O2/TVOC/CO2/CH2O Picture of Indoor Air Quality Sensor, Temp & Hum/O2/TVOC/CO2/CH2O

    Indoor Air Quality Sensor, Temp & Hum/O2/TVOC/CO2/CH2O

    1 review(s) | Add your review
    SKU: SUCH-AQS-IND
    $107.99
    ● Detect temp, humidity, O2, TVOC, CO2 & CH2O ● 4-20mA output for PLC, HVAC & IoT systems ● Low power design for 24/7 indoor air monitoring ● Compact ABS housing for wall or ceiling installation
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    🚚 Free shipping
    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    Indoor air quality sensor is a multi-parameter sensor for real-time indoor air monitoring and HVAC control. It measures temperature, humidity, O₂, TVOC, CO₂, and CH₂O to help users check ventilation, oxygen level, indoor pollutants, and air comfort. With 4-20mA output and wall or ceiling mounting, it is suitable for HVAC engineers, facility managers, IoT integrators, and air quality monitoring projects in factories, shopping centers, underground garages, public venues, smart homes, and commercial buildings.

    Feature

    • Counterflow Vent Design: The air sensor has a counterflow vent structure for improved measurement accuracy; the ABS housing is flame-retardant and heat-resistant.
    • Multi-Gas Integration: Independent probes for each gas, compact layout with high integration and space efficiency.
    • 24/7 Real-Time Monitoring: Stable signal output supports continuous 24-hour online monitoring and real-time upload.
    • Independent Sensor Probes: Each gas is detected using its own sensor probe, ensuring the air pollution sensor delivers accurate and reliable results.

    Dimension (Unit:mm)

    Iutdoor air quality sensor dimension

    Installed Method

    Indoor air quality sensor installed method

    Wiring Instruction

    Indoor air quality sensor convection hole

    Convection Hole

    Indoor air quality sensor rs485

    RS485 Output

    Specs
    Working Voltage DC 10V~30V (Standard 24V)
    Working Current <200mA
    Stabilization time 2min
    Detection frequency Data updated 1 time per second (default)
    Output Mode 4~20mA
    Product material ABS Shell
    Installation Ceiling-mounted, wall-mounted
    Reference size 100*100*30 mm
    Working Temperature -30℃~ 50℃
    Operating Humidity 0~95%RH(non-condensing)
    Storage Temperature -20℃~ 60℃
    Storage Humidity 0~99%RH(non-condensing)


    Substance Parameters

    Temperature
    Range -40℃~100℃
    Resolution 0.1℃
    Precision ±0.3℃
    Humidity
    Range 0~99% RH
    Resolution 0.1% RH
    Precision ±3% RH
    Carbon Dioxide CO2
    Range 400~5000ppm
    Resolution 1 ppm
    Precision ±(50ppm+3% read)
    Formaldehyde (CH2O)
    Range 0~1500 μg/m3
    Resolution 1 μg/m3
    Precision ±10 read
    TVOC
    Range 0~5000 μg/m3
    Resolution 1 μg/m3
    Precision ±10 read
    O2 (0-25%)
    Range 0~30% Vol
    Resolution 0.1% Vol
    Precision ± 5% Vol
    Application
    Industrial factory

    Industrial Factory

    Shopping senter

    Shopping Senter

    Underground garage

    Underground Garage

    FAQ
    ❯

    Install the sensor in frequently occupied rooms like bedrooms, living areas, or offices. Avoid placing it near windows, vents, or heat sources to ensure accurate readings. Wall-mount and ceiling-mount options are often available.

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    Yes. Deploying multiple sensors across different rooms or zones provides a comprehensive view of indoor air quality and allows zone-based ventilation control.

    ❯

    Most sensors have status indicators or self-diagnosis features. A consistent data output and normal device status on the display or platform usually indicate proper function.

    1 review(s)
    5.0 1
    Write your own review Close
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    Harold | 5/18/2026 1:12 AM
    Improve My Bedroom Air
    I’ve been waking up feeling stuffy lately, so I decided to try this sensor in my bedroom. The CO2 levels were much higher than I expected overnight, so I started cracking the window open and actually noticed better sleep after a few days. The setup was simple, and the display is easy to read. Definitely worth it.
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