Description of RTC EEPROM Module DS3231 The RTC EEPROM Module DS3231 is a high-accuracy real-time clock with battery backup, 4k x 8-bit EEPROM, and I2C interface. Features: Highly accurate timekeeping with temperature compensation Provides seconds/minutes/hours/date/day of week and year with leap-year compensation 12 / 24-hour formats Two programmable time-of-day alarms Programmable square wave output Digital temperature sensor AT24C32 4K x 8-bit EEPROM non-volatile memory CR2032 battery backup (included) I2C interface Power LED 3.3 and 5V compatible Packing Includes: 1 X RTC EEPROM Module DS3231 Note: Battery is included with the package.If you have to buy it separately from here. Lithium Battery CR2025 (Japan)
