Real-time Data Updates: This thermometer features a built-in high-precision temperature and humidity sensor. Data is accurately measured and updated in real-time, without delay, keeping you informed of environmental changes. Notifications & Alarms: Set your preferred temperature and humidity range via the "Tuya SMART" or "Smart Life" app. If the temperature exceeds the set point, a silent alarm will sound, and you'll receive an immediate push notification. Upgraded Large, Backlit LCD Display: Our hygrometer thermometer boasts a large 2.9-inch backlit LCD screen with bold text, ensuring easy readability even in low light, providing a clear overview of current temperature and humidity. Remote Temperature & Humidity Monitoring: Easily configure Wi-Fi with a 2.4g network and automatically add devices after enabling Bluetooth via the Tuya app. Remotely view temperature and humidity readings; ideal for monitoring nurseries, wine cellars, garages, etc. Smart features allow for timely environmental adjustments. Versatile Use & Built-in Battery: Powered by a USB cable and includes a backup battery providing over 5 hours of use during power outages. Mountable on walls, these hygrometer thermometers are perfect for wine cellars, greenhouses, kitchens, and more. Dimensions: 11 x 10.8 x 2.9 cm Package Includes: Temperature and humidity sensor *1, power cable *1