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Appropriate ventilation based on actual CO2 values

Appropriate ventilation based on actual CO2 values

The timeair measures the CO2 concentration in the ambient air and uses that to determine when the next air exchange needs to occur.

In daycare centers and schools, meeting and event spaces, but especially also in areas that are highly frequented it is difficult to have an overview of the correct ventilation measured. The timeair gives you room air feedback in real time and triggers alarms based on measured values instead of using a CO2-independent timer.
Compared with CO2-only sensors the timeair indicates not only the current carbon dioxide content of the ambient air, but also uses 12 LEDs to indicate the remaining time until a critical limit is reached. This can then be individually configured over a range of from ... to ... ppm (The RKI recommended limit is 1000 ppm.) When this value is reached, visual and optional acoustic signals are generated.



  • CO2 sensor:
    • Measuring range: 400-5000 ppm CO2


  • LED indicators on the unit for visual identification of the air quality
  • Alarm and reporting function:
    • 7-segment LED indicator for actual CO2 values and remaining time until venting.
    • 12 LEDs for showing the last hour before venting and for alarm signaling
    • Alarm beeper can be enabled
  • Possible applications:
    • Monitor CO2 values in offices and schools

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance for industrial environments
    • Low noise emission for residential and business areas
  • 2 year guarantee

Technical Data


Connections and displays:

Sensor:   CO2 air quality measurement
Supply voltage:   DC 5V over Micro-USB socket
Supply connection:   Micro-USA socket
Current consumption:   typ. 200mA @5V DC
Displays:   LED 7-segment display for measurement value and remaining time
LED color ring for indicating remaining time and alarm
LED CO2 indicator lights
Operating elements:   3 touch sensors for device configuration

Measuring unit:

Measuring range:     400-5000 ppm CO2
Resolution:     1 ppm CO2
Measuring error:     max. ±100 ppm ±5% of the measured value
Measuring frequency:     10s

Housing and other data:   

Housing:    Plastic compact housing for wall mount or tabletop
∅88mm x 18.9mm
Enclosure rating:    IP20 
Weight:     approx. 70g
Ambient temperature:     Storage: -40..+70°C
Permissible relative humidity:     0...90% relative humidity (non-condensing)
Scope of delivery:   1x timeair
1x USB AC adapter DC 5V, 1A
1x USB cable with USB-Micro plug, 1.8m


Units in box: 1