The Condair Cube is a unique, mobile air quality monitoring device, that measures the 
CO₂, Air Humidity and Temperature levels.

Keep your indoor air quality always in the green area and breathe healthy air thanks to the little Condair Cube!
This high-quality and handy device helps you stay healthy indoors.

Condair donates the entire profits from the sale of this high-quality measuring device to the foundation Green Cross Switzerland.

Institutions, companies, clubs and organizations
Within Switzerland and other countries

Please order here 
Private users
We support the Foundation Green Cross Switzerland.

Please order here 

Thanks to its high-quality sensors, the Condair Cube quickly and precisely measures the air quality everywhere: at home, at work, in the restaurant, in the gym or on the go e.g. on the train, bus, plane, in the car...


    One glance is enough to monitor the indoors air

    – this is the first step to prevention.

    Observe the traffic light colors: 

    find out the current levels simply and quickly and act accordingly. 

    Take action already at Yellow:

    The traffic light system of the Condair Cube is based on guideline values derived from international scientific evidence.

    A thought-out concept

    • Accurate measurements thanks to high-quality
      Sensirion sensors

    • Can be connected to a PC for larger live display on an external screen

    • Touchscreen and clear traffic light colors

    • Measured values visible over a 4-hour period
      (historic data may also be saved)

    • Small, robust and reliable

    • Rechargeable battery for 4-5 hours of operation

    • USB port for battery charging and data transfer

    • A Swiss innovation

    Discover more exciting options and tips, use your Condair Cube to the max!

    - Display on large screen - Application

    - SD-Card

    - Extend battery life

    - Longer USB charging cable


    The Condair Cube can be connected to a PC for larger live display on an external screen.

    Healthy indoor air:

    CO₂ < 800 ppm

    - Air humidity between 40 und 60% RH

    - Temperature between 20 and 23°C


    The Condair Cube helps you on the way to healthy indoor air.

    For the restaurant visit, in the workplace, in the school, in the fitness center, the visits and commutes...

    For yourself, for each familiy member, for the young and old ones!

    For your office, your practice, your restaurant, your home.

    The power of these three parameters will keep you safer

    Viruses in a wet droplet survive for shorter time. These aerosols also settle faster, due to gravity, i.e. they're not afloat for that long - less probability of being inhaled by others.
    The  CO₂ levels are an indicator of the indoor air quality.

    Where there is a lot of CO₂ - i.e. a high aerosol concentration and virus contamination - the probability that one gets infected with pathogens and viruses is greater. 
    Goal: Keep the CO₂ values below 800ppm and surely below 1200ppm!
    And if you find critical conditions in the restaurant or on the train - leave these rooms as soonest! There is a higher infection risk in there.

    The Healthy Humidity i.e. 40 to 60% RH reduces significantly the transmission of viruses transported by aerosols (produced e.g. when coughing, sneezing or even speaking). This leads to fewer respiratory infections.
    Goal: Keep the relative humidity within this range.

    Everything's in the green range!
    Check out 25 scientific studies conducted from 1948 to 2019 that all demonstrate the positive benefits of maintaining a ideal, mid-level indoor humidity - the indoor humidity for health.

    We want to draw attention to the importance of indoor air quality for health!
    Always, not only in times of Corona.

    Continue to follow the rules of hygiene and physical distancing, the recommended protection concepts and, if possible, get vaccinated. 

    But you should also know: the humidity offers a natural, additional protection against infections.

    Similarly, when driving, you do not rely only on the brakes for your own safety and that of your fellow human beings. You appreciate the modern vehicle's technology which offers a multi-level safety concept, across several parameters. i.e. not only the boosted brake performance - or the seat belts - or the power steering - or the airbags - or the tire tread depth, etc. but all these technical equipment together will help you avoid accidents and be safer. 

    It's the same with the air quality! Monitoring the indoor air quality is the first step to prevention.
    Ensuring good air quality and healthy humidity together result in great synergy effects with regard to holistic infection prevention.

    Frequently asked questions - FAQ

    • There are different causes for different values. Mainly:

      - Tolerances of the sensors - these tolerances are specified in the Operating Manual, at page 20: Product specification.

      - The location where the calibration was carried out and what was thus the reference for the calibration.

      The outside air, which is used in the calibration, is usually in the range of 400ppm, but this can also be increased depending on the proximity to roads.

    • The temperature measurement of the Condair Cube is quite sluggish.

      The reason for this is that the sensor needs a certain time until it reaches the operating temperature and the housing as well needs a certain time for acclimatization.

      The Condair Cube is designed for indoor use. If it is used outdoors, the wind and the sun exposure can strongly influence the measured temperature.

    • Ventilate the room by opening the windows and creating draught – this is how you achieve the best air exchange. If the value has decreased, you can close the windows again after some time.

      In winter, regular draught-air ventilation is recommended so that the room air is most effectively and quickly exchanged.

    • Place the cube in fresh outside air for about 10 minutes and check the CO2 value after this time.

      If the value is in the range of 400ppm +30/-10,  the CO2 value is displayed correctly.

    • With autocalibration, it is important that the sensor is placed in one location for a longer period of time.

      The reason for this is that the sensor records a value every 4h, after 7 days this value series is evaluated and the lowest value is assumed to be 400ppm - and thus the Condair Cube is calibrated to this value.

      It is assumed that over a period of 7 days, the ventilation achieves at least once a value of 400ppm.

      It is also recommended to expose the sensor to fresh outside air at least 1 time a week.

    • The difference in altitude changes the air pressure, which has an influence on the CO2 measurement.

      So if you take the Condair Cube with you to another geographic location, it is recommended to calibrate the sensor soonest, so it displays correct values from the beginning.

    • - Insert the card and then restart the Cube. Otherwise there is a possibility that the card will not be recognized.
      -Card must be formatted in FAT32 format.
      -Try another memory card. We recommend the SanDisk.

    •  Only Windows possible. No MacOs or Linux.

    • First turn on the monitor and then start the application.

    •  The display can be darkened or brightened using button 1 and button 2.

    • Connect your Condair Cube to a 5V power supply using the USB cable supplied.
      If you have problems charging, we recommend using the cable with a different power supply or replacing the cable.

    • Basically, the battery life is about 4 hours.

      By reducing the screen brightness or switching off the screen, the battery life can be extended significantly.

    • Set up the Condair Cube as described in the instructions and connect it via the USB cable.

      If it is operated permanently in one place, the sensor can also be best adjusted via auto-calibration.

    • The Condair Cube has a cavity on the lower side, in it there is a button on the left side.

      o    To turn on the Condair Cube, connect it via the USB cable OR press the described button for >2sec.

      o    If you want to switch off the Codair Cube once again,  press the same button on the bottom for approx. >4sec. until the screen turns black.

    • The screen brightness has been turned off in this case.

      The brightness can be increased again via the upper round button ("Button 1").
      (See also illustration in Tips or the user Operating Manual.)

    • For this you need, as described in the manual, a SD card. This is available in every electronics store.

      The card can be inserted into the SD card slot on the right side of your Condair Cube. After restarting the Condair Cube, the data will be recorded every 10sec.

      A .csv file is stored on the SD card for each new day.

      The .csv file can be opened and edited with Excel.

    • H: 8.5 cm
      W: 5.8 cm
      D: 3.2 cm

      The USB charging cable: 15cm
      (It has been specially designed so short for mobility, also to keep the cable always plugged in or to connect to the power bank or a computer easily and quickly.)

    • 24 months - provided it is used for its intended purpose.

    •  Only Windows possible. No MacOs or Linux.

    • First turn on the monitor and then start the application.

    •  The display can be darkened or brightened using button 1 and button 2.

    You have not found the solution to your problem? If you purchased the Condair Cube from a dealer, please contact them first. We will be happy to take care of it afterwards!


    Send us photos of your Condair Cube in action and win a little surprise gift!

    Briefly describe the situation encountered. We would like to publish them here to raise awareness about the indoor air quality! Anonymity will always be guaranteed.

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