1. This compact and multi-functional air quality detector can monitor five key environmental parameters in real-time. The device can measure carbon dioxide (CO₂), carbon monoxide (CO), formaldehyde (HCHO), total volatile organic compounds (TVOC), as well as temperature and humidity. 2. The detector is equipped with advanced sensors to ensure accurate readings. The clear LCD display and intuitive user interface make it easy for beginners to operate. The lightweight and compact body ensures easy portability and can adapt to various places - at home, in the office, or in the car. 3. Features: - Measure CO₂, CO, HCHO, TVOC, temperature and humidity. - Accurate real-time measurement. - Clear LCD display. - Easy-to-use interface. - Small and portable. - Suitable for various environments. 4. Package contents: - 1 x Air quality detector. - 1 x USB charging cable. - 1 x User manual.