Multifunctional air quality monitor: The indoor air quality monitor can accurately measure real-time levels of CO2, PM2.5, PM10, HCHO, and TVOC. Help you understand the air quality where you live. Portable size: The 6-in-1 air quality tester is small and portable, easy to carry anywhere you want, you can check the air quality anytime and anywhere. LCD backlight screen: The carbon dioxide detector is equipped with an LCD screen. The color display with backlight makes each value clear at a glance and easy to identify and read. Real-time display: The air quality detector allows you to monitor air quality changes and watch it on your mobile phone. This enables you to take necessary actions to improve the air quality of your surroundings. Rechargeable Battery: Our indoor air quality monitor comes with a 1200 mAh rechargeable battery and comes with a USB cable. The low-power processing chip enables long-term uninterrupted monitoring of air quality. Wide range of applications: The air quality meter is suitable for homes, schools, offices, travel, indoors, outdoors, agricultural planting, production warehouses and other occasions. It will always take care of you and your family's health.