This multifunctional device not only measure CO2 leveling but also displays temperature and Humidities, all on a clear and easy to read screen Suitable for health family, workers seek a freshes working environment, and students aiming for a conducive learning Excellent for use in various setting such as living room, bedrooms, offices, and classrooms, ensuring best air wherever small and, this portable air Monitors is your Stable Company for continuous indoor air assessment without the hassle of frequent charging the of air with our high Precisions Air detectors, featuring advanced CO2 sensoring technology for accurate readings, Manufacturer: Kalttoy