Features: This gas detector features real time air quality monitoring with LCD display, simultaneously tracking CO2//TVOC/HCHO concentrations while measuring temperature and humidity for comprehensive environmental analysis. Built with strong ABS housing and portable design, the analyzers integrates a long lasting rechargeable battery with USB charging capability, accompanied by visual/hearable alarms for immediate hazardous gas levels warnings. Ideal for homeowners, renters, and health awake families seeking to monitor indoor air pollutants, detect hidden formaldehyde risks, and maintain optimal living conditions. Perfect for daily use in bedrooms, kitchens, offices, or during travel to assess hotel air quality, vehicle interiors, and newly renovated spaces requiring ventilation guidance. Its compact size and innate interfaces make professional air quality testing accessible for both routine home safety checks and emergencies leak detection scenarios. Specifications: Component : ABS. Dimensions: about 164x69x44mm/6.46x2.72x2inch Battery: included Package Includes: 1xGas analyzers note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.