10-in-1 Air Quality Detector PM2.5 PM10 PM HCHO TVOC CO CO2 Formaldehyde Monitor
Detector ×1. Battery Capacity: 2000mAh lithium battery. Press the power button once to toggle ℉/℃. Press twice to toggle sound on/off. USB-C charging cable ×1. Four-Color Alert System: Indicates air quality through green, yellow, orange, and red displays, with audible alerts when standards are exceeded.