In order to use the RTC and the SD for our devices, you can work with RTC.h and SD.h after downloading and using our "industrialshields" boards. If you want more information about working with these features, you can check the following blogs about RTC and SD: 

• Working with the RTC and SD

• Syncronizing the RTC clock with NTP server

If you have any other questions, do not hesitate in contacting us at our support mail.