Easy to Connect: Simply download the Govee Home app, search for and select H5075, and pair it successfully within minutes. With a 196ft/60m Bluetooth range, you'll be notified of any air changes immediately. Accuracy: Built-in Swiss-made smart hygrometer sensor, the room temperature is accurate to ±0.54°F while humidity is ±3%RH. It provides high precise monitoring. Up to 2S refresh speed always gives you the latest changes of the environment. Large LCD Display: It offers realtime temp/humidity readings with large numbers and max/min records on 3 inch LCD screen, comes with 3 level comfort indicators dry/comfort/wet keeping you aware of the house situation with just a glance. Smart App Alert: You'll receive a notification alert once humidity or temperature is out of preset range. It can help you effectively adjust the situation of your wine cellar, greenhouse, basement or other places in time. Free Data Storage: It features 20 days of online data storage. You can view recent humidity and temperature records. Curve graph displaying brings you a clear data-changing track. You can export latest the 2 years' data to CSV format at any time. Thermometer Hygrometer, Accurate Indoor room Temperature,Humidity meter, Humidity Sensor with Notification Alert, LCD Bluetooth Temp Humidity Monitor with Data Storage for House Garage Greenhouse Wine Cellar