This sensor measure environment parameters: pressure, temperature and humidity.
You can use it indoor or outdoor. In this design you can use this sensor in many implementations.
For indoor application I added 4x7seg LED display and USB power connector. If you want use it in outdoor, I prepared connector for Bluetooth and power module for Li-ion cell. For special implementation I added UART( this is the same connector for Bluetooth).
The complete information you can find in Elektronika Praktyczna October 2018.
In next month I will add more details(code, current consuption etc).
In youtube you can find a video about this device.