Vevor Air Quality Monitor 9-in-1 Indoor Outdoor CO2 PM2.5 PM10 PM1.0 TVOC HCHO Meter New Lion Energy 5" pneumatic rubber wheels help

5" pneumatic rubber wheels help it roll smoothly across grass

157" mesh to prevent clogs from leaves

repeated use

6 in thickness range

Vevor Air Quality Monitor 9-in-1 Indoor Outdoor CO2 PM2.5 PM10 PM1.0 TVOC HCHO Meter New Lion Energy 5" pneumatic rubber wheels helpThe Vevor air quality monitor is a 9 in 1 detector designed to track key indoor and outdoor air quality readings in real time. It measures CO2, AQI, PM1. 0, PM2. 5, PM10, TVOC, HCHO, humidity, and temperature on a large color display. The unit uses multiple sensor technologies for accurate monitoring and provides audible alerts when CO2 levels exceed the preset threshold. A rechargeable 3000mAh battery delivers up to 9 hours of continuous use for