I advise you to buy. After a long selection, this is the best tool in terms of price / quality ratio Has some pros: Pretty accurate, 2 batteries included. Plastic case. Full metal body. With its cons: Didn't work much until I found it. Well, except that the sticker was glued crookedly on the case.
I have included some photos to bring my review to life and provide a more tangible sense of my experience.
🌬️ Продвинутый внутренний монитор качества воздуха 3 в 1 с записью данных CO2/RH/Temp и звуковой сигнализацией - технология сенсора NDIR
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