Comfort CO2: Indoor Air Quality

Comfort CO2: Indoor Air Quality

Optimising comfort and ensuring the health of the occupants
  • Triple action: Temperature, Humidity, CO2
  • Daily 24-hour summary chart:
    • ICONE index
    • time spent in poor Indoor Air Quality (IAQ)
    • min/max/average temperature + humidity + CO2
  • Additional functions: alert button, dry contact input
  • Automatic or manual CO2 calibration
  • User information: light indicator on the unit
  • Data logging and redundancy
  • Data transmission: periodic or on alarm
  • Local and remote configuration
  • Battery powered product
  • Compatible with KARE et KARE+


The COMFORT CO2 IoT sensor is part of the IAMo solution. 

A complete offer dedicated to the monitoring and analysis of Indoor Air Quality, comfort and ventilation in your buildings



Periodically monitor:

  • temperature
  • humidity level
  • CO2 concentration

Count the number of events:

  • on the alarm button or dry contact input


And/or trigger an alarm if:

  • high or low threshold(s) are exceeded
  • press the alert button
  • event on the dry contact input
Technical features

Mechanical characteristics

  • Weight: 146g (including battery)
  • Dimensions: 111 x 61 x 40 mm
  • Housing: IP20, Bayblend® FR3010 (PC/ABS) plastic, white
  • Mounting: wall or laid flat

Operating conditions

  • Temperature: 0°C /+50°C
  • Humidity: 0 to 85% RH (non-condensing)

Power supply

  • 1 double-battery pack connectorised


  • Locally: IoT Configurator
  • Remotely: downlink via the network or via the KARE platform
  • By the air: KARE+ compatible
  • Security: PIN/PUK protection

Technical features

  • CO2 calibration: automatic or manual via button or downlink
  • Data sending mode: periodic and/or on events
  • Optimisation of autonomy: historisation
  • Data accessibility: redundancy
  • Alarm repetition in case of persistent event
  • Error / fault management: configuration error, low battery
  • Data time-stamping (LoRaWAN)
  • Network quality test at start-up (LoRaWAN)


  • Area:
    • Sigfox: RC1
    • LoRaWAN®: EU863-870

Regulations and certifications

  • Standards: Directive 2014/53/UE (RED)h

Find all the technical characteristics in the datasheet of the COMFORT CO2.


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Part number
  • ARF8273AB COMFORT CO2 LoRaWAN® EU863-870
  • ARF8373CB COMFORT CO2 Sigfox RC1
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