Features: Experience comprehensive air quality monitoring with 15 in 1 Air Quality Monitors, featuring real time detection of PM, CO2, TVOC, HCHO to ensures safe and healthy environment for home or office. Equipped with high Precisions sensors and user friendly, this device offer accurate data updates and customizable setting, allowing you to track air quality trend and make informeds decisions about your indoor environment. for environmentalist, researcher, and health enthusiasts who prioritize air quality, this Monitors provide into the air you breathe, helping protect sensitive groups like pregnant women, children, and the elderly. for diverses setting such as home, office, school, hotel, and even during travel, this portable air quality Monitors adapts seamlessly to various, ensuring you stay informeds. With long battery, and easy USB charging, this air quality Monitors combines styles and functionality, making it essential tool for anyone committed to maintaining indoor air quality. Specifications: Materials: Plastic Size: 70x35x90mm/2.76x1.38x3.54inch Style: Black Redness, White Redness (optional) Package Includes: 1Set Air Quality Tester note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.