Desktop Indoor Air Quality (CO2) Monitor | TENMARS ST-502

AUD $450.00 .( AUD $495.00 inc. GST )

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    The Tenmars ST-502 Desktop Indoor Air Quality (IAQ) Monitor measures Carbon Dioxide (CO2), Relative Humidity (%RH), Temperature and Ventilation Rate in an indoor environment such as Home, Aged Care Homes, Hospitals, Offices, Classroom, Storage, Laboratories and others.

    Applicable in building air conditioning system (HVAC) monitoring and Indoor air quality monitoring.

    Supplied with Statement of Conformity to ensure product meets ISO 9001 Quality standards.

    2 Years Warranty 

    PDF download   Tenmars ST-502 User Manual

    TENMARS ST-502 Desktop Indoor Air Quality (CO2) Monitor


    • Non-Dispersive Infrared (NDIR) CO2 sensor ensures long term stability and durability.
    • 4 Measurements-CO2/CO2 Ventilation Rate/Temperature/Humidity.
    • Large display.
    • Easy -to-use PC software for parameter settings and analysis.
    • Fast USB download
    • CO2/Temperature/Humidity high,low alarm setting.
    • Set on the table or wall-Mounted (use 1/4”tripod nut).
    • Supplied with Statement of Conformity to ensure product meets ISO 9001 Quality standards.

    Indoor Air Quality (IAQ) refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. Understanding and controlling common pollutants indoors can help reduce your risk of indoor health concerns.

    The TENMARS ST-502 Desktop Indoor Air Quality (CO2) Monitor is a desktop indoor air quality monitor that can measure carbon dioxide, relative humidity, air temperature, and ventilation rate.


    • Building HVAC monitoring
    • Indoor air quality survey
    Weight 0.2 kg



    Type Thermistor
    Measurement Range 0°C~50°C / 32°F~122°F
    Accuracy ±1.0°C / ±1.8°F
    Resolution 0.1°C / 0.1°F
    Response Time Typ. 1 second

    Relative Humidity

    Type Capacitive
    Measurement Range 5-95%
    Accuracy ±3.0%RH (20~80%);±5.0%RH (<20%,>80%)
    Resolution 0.1%
    Response Time Typ. 4 seconds


    Type Non-dispersive infra-red (NDIR)
    Measurement Range 0 to 9999ppm
    Accuracy ±5% of reading or ±75ppm (0-2000ppm,others out of scale renge)
    Resolution ±1ppm
    Response Time Typ. 2 minutes by 90%


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