Data storage capacity of 1000 groups, allowing for extensive data collection and analysis. HCHO measurement range of 0-5.00 mg/m3 with an accuracy of ±5% () and a resolution ratio of 0.00 lmg/m3. Equipped with a fan sample mode for efficient air sampling and measurement. TVoC measurement capability from 0-10.00 mg/m3, ensuring reliable monitoring with an accuracy of ±10% (). Powered by a 3.7V lithium polymer battery with a quick charging time of 2-3 hours., Manufacturer: Akfldms