4. User-friendly Design: Features a 2.8-inch TFT color screen with clear digital display for a comfortable visual experience; also for easy monitoring of air quality changes. 2. Tuya Wi-Fi: Connect to your phone via the Tuya TUYA app to view real-time data: Historical curves for 10 parameters, alarm & timer settings, alarm value settings, Fahrenheit/Celsius switching, sleep timer settings, and more. 1. Multi-function Air Quality Detector: Monitors multiple air pollutants including Temperature, humidity, formaldehyde, organic pollutants, carbon monoxide, carbon dioxide, PM2.3, PM1.0, PM2.5, PM10, Air Quality Index, air quality level indicator, trend chart, alarm & timer, date and time, ensuring comprehensive indoor air quality protection. 3. Long-lasting Battery: Built-in 500mAh lithium battery, charging for about 4 hours can provide 300-360 minutes of continuous operation, even under high power consumption from multiple sensors. 5. It features with multiple ventilation holes to facilitate real-time air circulation and convection. This design ensures that the sensor is in fullcontact with the air, enhancing its sensitivity and enabling accurate detection of small particle content., Weight: 0.43210603352 pounds, Manufacturer: Yarryuter