Real-time synchronization update: Accurate measurement real-time update without delay, USB Charge, needs to be plugged in with a USB cable or turn on the backup battery switch to work. Users can choose the temperature or humidity report time, Such as 1 second or 120 seconds. Upgraded backlit LCD screen: The thermometer Hygrometer features a backlit LCD display to allow you to stay informed in real-time about your temperature and humidity gauge at a glance in any light conditions. App Notification Alert: If the wifi thermometer hygrometer falls out of the range you set in Tuya or Smart Life App, you'll receive an app push message immediately. You can turn on the low-battery reminder, provide it anytime, anywhere, and know the changes in your wine cellar, greenhouse, etc. through the app. Remotely View temperature humidity: The temperature and humidity sensor can be viewed remotely, you can monitor your baby's room, wine cellar, garage with this item. Support Alexa, Google Assistant, know temperature via simple voice control commands, e.g.: "Alexa, What's the temperature in here?" Realize automation: Use 2.4G wi-fi network, easy to set up wifi, auto scan device and add after turn on Bluetooth via Tuya app.