The RTC (Real Time Clock) is a device that tracks time and date accurately and precisely. Due to its high precision, it is better suited for long-term time tracking than the clocks on microcontrollers. https://elecena.pl/product/25932907/333051-developer-boards-real-time-clock-rtc-pcf85063a 2024-05-24 https://elecena.pl/product/25932907/333051-developer-boards-real-time-clock-rtc-pcf85063a 2025-09-27