Features: Unveil your indoor environment with our Professional Indoor Air Quality Tester, a comprehensive solution for detection of CO2, formaldehyde, TVOCs, and more. Engineered with precisions and user friendliness in mind, this air quality tester boasts advanced and a clear display to keep you inform about your indoor atmosphere. For homeowners, office workers, educators, and healthcare professional who prioritize breathing air in their living and working space. Whether it's for your bedroom, living room, office, or even inside your car, this air quality Tester ensures that you're aware of the air you breathe, promoting a healthier environment. Control of your indoor air quality, backed by a decade of expertise and chose by top universities and government agencies for maintaining air. Specifications: Material: ABS Battery: 2000mAh(Include) Measurement: CO2: 400PPM-5000PPM TVOC: 0～9.99mg/m³ Formaldehyde: 0~1.99mg/m³ PM2.5: 0~999ug/m³ PM10: 0~999ug/m³ PM0.3: 0~999ug/m³ Temperature: -10°C～50°C Charging Port: Type C Working Current: 260mA Size: About. 90x35x70mm/3.54x1.37x2.75in Color: Black Yellow/White Yellow Package Includes: 1 Set Air Quality Detector note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.