13in1 Air Quality Monitor Detects PM2.5, PM10, TVOC, Formaldehyde (HCHO), and Humidity Also displays Date, Alarm Timer, and Stopwatch Timer for current indoor air 3Level Gas Concentration Indicator: Green (Safe), Orange (Unhealthy), Red (Unhealthy) Exceeding alarm value triggers an alarm to alert occupants Key benefits Provides comprehensive monitoring of common indoor air pollutants in one device Quick, ataglance status through a clear multilevel color indicator Builtin date, alarm timer, and stopwatch timer support everyday tracking and routines Alarm notification helps you respond promptly to unsafe air conditions Use scenarios Home environment: monitor living room or kitchen air while cooking to catch spikes in PM2.5 or TVOC Bedroom or baby room: track humidity and pollutant levels to maintain a healthier sleeping environment Office or classroom: keep an eye on air quality during work or study sessions and be alerted when readings exceed safe levels Notes Designed for current indoor air monitoring with straightforward indicators and alarms Functionfocused design emphasizes reliability and ease of use for everyday environments