Designed with just 3 buttons for effortless function switching, auto detection upon startup, and none complicated setup, perfect for seniors, renters, and parents This multifunctional detector simultaneously measures formaldehyde (HCHO), TVOC, CO₂, temperature, and humidity, providing comprehensive air analysis for homes, cars, and offices with a single device Equipped with professional sensors offering 0.001Mg / m³ formaldehyde accuracy and 1ppm CO₂ resolution, ensuring reliably long term with minimal data drift Powered by a built in 3.7V lithium batteries for cordless operations, ideal for home, travel, or vehicle use without power outlet restrictions Features an easy to read LED screen with color coded air indicators (green / yellow / orangeness / red) to visually distinguish optimal, moderate, and hazardous levels, making it accessible for all ages, Manufacturer: carotoe