Real Time Clock (RTC) Module

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This handy module keeps accurate time for years using a tiny coin-cell, and is very simple to connect to your Arduino project. A driver library allows your program to easily set or read the time and date. Perfect for clock projects, dataloggers or anything that needs to know the date and time.

Note: Due to restrictions on shipping batteries, the RTC Module is now supplied without a battery. To maintain the time setting without an external power source, you will need to intall a CR1632 coin cell.


  • Set or read accurate time and dates from your Arduino.
  • Keeps time without power using a CR1632 coin cell battery backup (not included)
  • 236 Bytes of addressable non-volatile memory, save serial numbers and important values.
  • Add a Dot Matrix Display panel and one of our Arduino-compatible boards for a huge clock!
  • Ideal for datalogging projects.
  • Free software library and examples.

    • RTC (0)