1. Since this five-in-one air quality monitor is of great significance to individuals, it will be your best choice. It can accurately monitor carbon dioxide, total volatile organic compounds, formaldehyde, humidity, and temperature. You can monitor the environmental conditions at any time. 2. This air quality monitor is equipped with a high-performance chip that responds quickly and is sensitive, capable of accurately capturing the weak current generated during the electrochemical reaction process. The dual-color display and voice alarm functions allow you to conveniently understand the current air quality. 3. It has a built-in 1200 mAh rechargeable battery and comes with a 5V USB charging cable. The standby time can reach 10 hours, so you don't have to worry about running out of power. 4. The mesh design enables the device to dissipate heat better during operation, preventing the device from overheating and thus obtaining more accurate measurement data. 5. Color: White 6. Material: ABS 7. Package contents: - 1 air quality monitor - 1 USB charging cable - 1 English instruction manual 8. Only the above package contents are included, and other products are not included. 9. Note: Due to light reflection and different monitor settings, the color of the items in the picture may vary slightly from the actual product. The allowable measurement error is +/- 1 - 3 cm.