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dataloggers, thermometers, hygrometers...
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CO2 monitor with built-in carbon dioxide sensor

CO2 monitor - carbon dioxide level detector. Although carbon dioxide is invisible and odourless, increased CO2 content in the room leads to fatigue and decreased mental concentration.

Battery powered device U8415 with external power (optional accessories) is designed to indication of CO2 concentration inside buildings (schools, conference halls, hospitals, offices, cinemas, theaters etc.).

The level of CO2 concentration is indicated by the device using three colors. Changes in the indicated states are also signaled acoustically - by a beep. The signaling method can be set by the user using the COMET Vision software.
The device U8415 is equipped with a maintenance-free and long-term stable NDIR sensor with dual wavelength and multi-point calibration.

Green LED flashes - CO2 concentration 0 to 1000 ppm

Yellow LED flashes - CO2 concentration 1001 to 1400 ppm

Red LED flashes - CO2 concentration 1401 ppm and more


Recorder includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.


  • code
  • Warranty
    3 years
  • On request

Technical data

Measured value



Measuring range 0 to 5000 ppm
Accuracy ±(50 ppm +3% from reading)
Measurement interval 15 s with external power supply, 2 min on battery power


Operating temperature -20 to +60 °C
Channels internal CO2 sensor
Power battery SONY LiIon 5200mAh
Protection class IP30
Recommended calibration interval 5 years
Dimensions 61 x 93 x 53 mm
Weight approx. 250 g
Warranty 3 years