Measures carbon dioxide, temperature, and humidity simultaneously, giving you a complete view of indoor air quality with a single device. Realtime CO2 monitoring is shown on a colorful backlit display that visually indicates concentration changes, helping you respond quickly. Portable, cordless operation with a builtin 1200mAh battery that is rechargeable via USB, allowing placement anywhere without constant power. Compact, lightweight design suitable for desktop or shelf placement in small spaces; easy to move between rooms or take on the go. Ideal for families and offices that prioritize maintaining healthy indoor air in homes, workspaces, or shared areas. Use scenarios: In kitchens and living rooms during meals or gatherings to ensure air remains comfortable and within safe CO2 levels. In bedrooms or home offices to support better sleep quality and sustained focus through stable air conditions. While traveling or moving between rooms, thanks to portable power and quick visibility of changing air quality. Ataglance attributes: Function: Multisensor device measuring CO2, temperature, and humidity with realtime display. Compatibility: USBrechargeable battery for flexible placement without wired power. Size: Compact and portable, suitable for various room sizes and layouts. Performance: Realtime readings with a visual CO2 trend on a backlit display for easy interpretation.