The best monitors detect a range of indoor pollutants ... Our top-rated home air quality monitors are all capable of measuring carbon dioxide and PM2.5 levels, but only some display an overall ...

When the meter was exposed to the breath from one of the performers during the event, the screen color changed to red to show an increase in the CO2 level. “Look at this to see the monitor ...

Around 300,000 carbon dioxide monitors are to be made available to schools in England next term to help improve ventilation and lessen Covid outbreaks. The Department for Education said the ...