The wireless room sensor, QPA2892/WI indicates the current CO2 level via its CO2 traffic light mode.
With activated CO2 traffic light mode, the indoor air quality level is indicated by a multicolor indication 
on the device. The CO2 traffic light mode has three states:
- Green: Good room air quality (CO2 level below CO2 Thresholds1).
- Yellow: Fair room air quality (CO2 level between CO2 Thresholds1 and CO2 Thresholds2).
- Red: Poor room air quality (CO2 level above CO2 Thresholds2).
To activate this functionality, the CO2 traffic light mode must be activated.
- Access Device parameters of the device (see Device parameters)
- Go to parameter CO2 LED Mode
- Select the LED response for traffic light indication (default: "0 Good: Green off; Okay: Yellow off; Poor: Red off")
- Optional: Adjust the CO2 Thresholds
- Save the settings with Apply
- The CO2 traffic light indicator is on for 6 s while CO2 LED Mode is adjusted.
