Details: Thermometer Hygrometer, Accurate Indoor Temperature Humidity Sensor with Notification Alert, LCD Bluetooth Temp Humidity Monitor with Data Storage for House Garage Greenhouse Wine Cellar Features: Easy to Connect: Simply download the Govee Home app, search for and select H5075, and pair it successfully within minutes. With a 260ft/80m Bluetooth range, you'll be notified of any air changes immediately. Accuracy: Built in Swiss made smart hygrometer sensor, the 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 lastest changes of 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 house situation with just a glance. Smart App Alert: You'll receive a notification alert once temperature or humidity is out of preset range. It can help you effectively adjust situation of your wine cellar, greenhouse, basement or other places in time. Free Data Storage: It features 20 days online data storage. You are able to view recent temperature and humidity records. Curve graph displaying brings you a clear data-changing track. You can export latest 2 years data to CSV format at any time. Color: Black Brand: Govee Package Dimensions: 4.6 x 2.8 x 1.2 inches