urban outfitters armchair 3d models
29551 3d models found related to urban outfitters armchair.
DIY Frugal Arduino CO₂ Sensor Monitor
thingiverse
thingiverse
The typical outdoor air CO₂ levels are between 410-420 ppm in remote locations, and around 450 ppm in urban environments [4][16]. We exhale roughly 40000 ppm CO₂ [5]. Aerosol researchers recommend keeping CO₂ below 800 ppm to prevent the spread of...