Features: The Air Quality Monitor accurately detects formaldehyde and CO2 levels in real time using advanced sensors technology, ensuring your indoor environment remain safe and healthy. Featuring a large LCD screen and ABS housing, this portable detector delivers clear readings and withstands frequent use across multiple locations. Ideal for homeowners, renters checking new spaces, and professional monitoring workplace air quality. Perfect for testing living rooms after renovations, evaluating office ventilation systems, or ensuring nursery air purity. Its power saving mode automatically conserves battery life during inactivity while maintaining continuous air quality monitoring capabilities. Specifications: Component: ABS Battery capacity: 2000mAh Battery input 5V/1A Testing items: formaldehyde/TVOC/CO2/temperature/humidity Detection ranges: formaldehyde HCHO: 0.000-1.0000mg/㎡; TVOC: 0.000-5.0000mg/㎡; CO2: 380-2000ppm Package Includes: 1Piece Air Quality Detector note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.