Wireless APP Control: Hygrometer Bluetooth 5.0 thermometer uploads data to the APP when connected via Bluetooth. You can check the max and min values of temperature and humidity on APP from your phone. You can set the temperature and humidity monitoring range, and the value on the app will turn red when it is out of range. The alert notification will also be sent to your phone. Sensitive and Accurate: Indoor Thermometer with precise and sensitive temperature and humidity sensor. The temperature error can be 0.5C ( 1F), the humidity error can be 5%. It refreshes once per second to provide more accurate and faster data. Export Data Storage: Digital hygrometer of the indoor thermometer will record the data every 10 minutes in the APP, which is a total of 100 days. Design Port ...