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Air quality controllers

Order numbers

Logo Hugo Müller
GS 40.10 knx
GS 40.11 knx new
CO2- air quality sensor & controller
GS 41.10 knx
GS 41.11 knx new
CO2- air quality sensor & controller with manual set-point temperature adjustment ± 3°C

Air quality sensors & controllers
GS 40.1x / GS 41.1x


  • Detection of air quality
    (CO2-concentration, rel. humidity, temperature)
  • CO2-sensor (Measuring range 390...5.000 ppm air pressure compensated)
  • CO2-value is atmospheric pressure compensated
  • Sensors for CO2-, temperature, humidity and atmospheric pressure measurement
  • Temperature sensor (Measuring range 0...+50 °C)
  • Humidity sensor (Measuring range 0...100 % rel. humidity)
  • Humidity comparator function
  • 5 binary and analogue inputs (e.g. for connecting an external temperature sensor)
  • Clearly structured ETS
  • Easy installation and mounting
  • Modern and planar design
  • Wall mounting
  • Additionally at GS 41.10 knx / GS 41.11 knx:
    manual adjustment of set-point temperature via touch panel (adjustment range ± 3°, increment 0,5°)

    Additional features GS 40.11knx / GS 41.11 knx:
  • Party function
  • Extension of the value range of setpoints
  • Temperature control with up to 4 sensor values possible
  • Additional VAV controller
  • and much more

Information about CO2 and Covid-19

  • Every person is emitting CO2 and aerosols e.g. during breathing. Today aerosols are claimed to be one of the transmission ways of SARS-CoV-2. CO2-concentrations can be measured and the correlation between the CO2 and the aerosol concentration can be used for analytical investigations, which use the measured CO2-concentration to calculate a likely aerosol concentration. (TU Berlin)
  • A longer stay in small, bad or not ventilated room can increase the probability of a Covid-19 spread by aerosols even on bigger distances over 2 m. (RKI)
  • The use of our CO2-sensors and the resulting room ventilation helps minimizing the risk of infection e.g. in schools or offices, gyms, restaurants or other premises where several people stay together.

Your direct contact to us

Hugo Müller GmbH & Co KG

Tel.: +49 (0) 7720 80 83 6