IoT basics
Why measure CO₂ in classrooms and offices?
CO₂ above 1,000 ppm reduces concentration. How to measure it, which thresholds matter and simple ventilation tips.
AIoT Viet engineering team
In a closed, crowded room, CO₂ can exceed 1,500 ppm within 30 minutes. People feel drowsy and lose focus without knowing why.
Thresholds to remember
- Below 800 ppm: good
- 800–1,200 ppm: consider ventilating
- Above 1,200 ppm: ventilate now
The Air Quality Starter Kit shows CO₂ right on its e-ink display and sends an alert when the threshold is exceeded.
- #CO₂
- #air quality
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