Features: 1. This portable air quality detector, the product does not need to be calibrated, turn on and measure, can accurately detect carbon dioxide. 2. 5-in-1 multifunctional air detector with: large screen display of electricity, CO2 value, HUMI value, HCHO value, temperature and humidity. 3. Different colors correspond to different air quality, suitable for office, home and other occasions. 4. Intelligent color screen display, clear numbers, easy to identify and read; with alarm mode, prompting users to pay attention to the environment. 5. Suitable for home, children's room, car, office, etc.; small and portable, easy to carry, does not take up too much space, can be charged by USB data line. Specifications: Material: ABS Voltage: 5V Power supply: USB charge Product size: 168*65*45mm Package size: 188*110*85mm Weight: 270g Package includes: 1* 5 in 1 air quality meter 1* USB charge cable