Features: With a TVOC sensor, it can detect VOCs in the environment and better understand the environment. Real-time monitoring and real-time display of carbon dioxide concentration per cubic meter. This detector is small in size and portable, can clearly display the concentration of HCHO and CO2, temperature and environmental humidity, suitable for office, home, gym and other scenarios. It can detect and display the temperature and humidity of the environment =environment to help users understand the environment. It is suitable for office, family, gym and other occasions, with a wide range of applications. Intelligent color display, the number is clear, easy to identify and to read. With alarm mode, color change, users are encouraged to pay attention to the environment. It has a long lifespan and can be charged with a USB cable. Small and portable, easy to carry, does not take up too much space, can be installed in the house. Specification: < li> Material: ABS Measuring accuracy: 1ppm Measuring range: 400-6000 Operating voltage: 3.7 V Current: 160 mA Power: 0.6 W Battery: 3.7 V, 1500 mAh Packing size: 141*98*48mmPacking weight: 210g packing list: < li> 1 * CO2 detector (Black) 1 * USB cable Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. < b>2. Due to manual measurement, the sizes shown may vary by 1-2 cm. Good quality product