More powerful CO2 sensor compliant with decree no. 2015-1000. Measures and alerts when CO2 levels are too high and the room needs to be ventilated. Ideal for healthcare facilities or medical practices. eal for healthcare facilities or medical practices. Data recording. Visual and audible alarm. Air temperature and humidity display. Backlighting. NDIR sensor. Dimensions : 11 x 11 x 6 cm. Rechargeable lithium battery (USB cable supplied). 2-year warranty.