This shield is extremely useful for data logging applications, it has a build in SD card adapter, real time clock and some prototyping area to add your preferred sensors.
- SD card interface works with FAT16 or FAT32 formatted cards. 3.3v level shifter circuitry prevents damage to your SD card
- Real time clock (RTC) keeps the time going. The battery backup lasts for years
- Prototyping area for soldering connectors, circuitry or sensors.
Instructables: https://www.instructables.com/id/Logger-Shield-Datalogging-for-Arduino/ (Take note the board in this tutorial is not exactly the same since that board makes use of through hole components but the wiring and functionality is the same).