All-in-One Air Quality Monitor: This device monitors 11 key indoor environmental factors. Real-time Data Display: View 11 data points simultaneously, including temperature, humidity, CO, CO2, HCHO, TVOC, PM0.3, PM1.0, PM2.5, PM10, and a composite air quality index. Data updates every second. Color-Coded Indicators: Intuitive color-coded displays for each parameter provide a quick understanding of indoor air quality. Composite Index: Intelligently calculates a composite air quality index based on individual readings for a comprehensive overview. Wi-Fi Connectivity: Automatically synchronizes time and date. Alarm Clock: Set up to three alarms for daily reminders. Alarm duration is 30 seconds and customizable via app. Battery Powered Color: Black Material: Plastic Package Contents: 1 x Air Quality Tester 1 x Cable Note: Minor variations in color or appearance do not affect functionality.