introduced a CO2 detector fitted with a human sensor to count people at the waiting room for departing passengers. The measured CO2 concentration is combined with data on the population density ...
As scientists have indicated, measurements of carbon dioxide concentration at Mauna Loa show that in 2023 it reached 426 ppm, significantly higher compared to previous years.
Carbon monoxide detectors are designed to measure the concentration of carbon monoxide in the air in parts per million or ppm and to sound an alarm if enough of the chemical is around in the air ...
Bearing both the Kidde and Ring brands, the new Smoke Alarm ($54.97) and Combination Alarm (smoke plus carbon monoxide detection, $74.97) are equipped with Ring’s smart home technology and ...