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Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor for Travel Home Indoor,You Can Use Anywhere electronics3 100% Satisfied Service:Enjoy a smooth&worry-freeMini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor for Travel Home Indoor,You Can Use Anywhere Air pollution is a major threat to human health. Knowing the quality of the surrounding air is important to you, not only for yourself, but also for the people you care about. This carbon dioxide meter will accurately read the carbon dioxide levels anywhere and also help assess the amount of ventilation in any indoor space such as a