HomeMatic HmIP-SCTH230 Installations- Und Bedienungsanleitungen Seite 47

Five illuminated LEDs (D) on the top of the unit indicate
the CO2 load in the room:
Number LEDs
one LED
two LEDs
three LEDs
four LEDs
five LEDs
ppm = air quality indicator
The maximum value in indoor areas should not
exceed 1500 ppm.
The CO2 sensor provides a configurable switch-
ing threshold. This can be defined individually via
the Homematic IP app or via the WebUI, e.g. in
order to switch on a light once a certain CO2 lev-
el is reached.
Information on CO2 pollution
Air quality
very good
good
medium
poor
very poor
CO2 pollution
< 600 ppm
< 900 ppm
< 1200 ppm
< 1500 ppm
>= 1500 ppm
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