All-in-1 indoor air quality monitor that tracks five parameters: formaldehyde (HCHO), VOC, CO2, temperature, and humidity to continuously protect family health. Formaldehyde is a common indoor pollutant from furniture and building materials, and long-term exposure poses health risks. VOCs from paints and detergents also affect indoor air quality. Advanced sensor technology combines a semiconductor gas sensor with a temperature and humidity sensor for precise, fast gas detection and reliable coverage. The semiconductor sensor is highly sensitive to gases such as VOCs and CO2 and can quickly detect trace amounts to reflect air quality changes. The accompanying temperature and humidity readings provide essential context for interpreting gas data and ensuring stable performance. Key benefits - Real-time, multi-parameter monitoring for a clear view of indoor air quality - Early detection of potential pollutants from furniture, building materials, and household products - Fast response to changes in air quality with reliable performance in typical indoor environments use scenarios - After renovation or new furniture introduction to monitor HCHO and VOC levels before occupying the space - In homes with children or elderly residents to track humidity and CO2 for comfort and health - In offices, classrooms, or study areas to assess ventilation needs and maintain a healthy environment