rtc ds3231 mini real time clock module DS3231SN for raspberry arduino

Spesifications : - Included battery - 3.3V and 5V voltage (3.3 V recommended) - Compatible Arduino,Raspberry Pi,Orange Pi,STM32,ESP8266 - Backup battery voltage: 2.3 V to 5.5 V (3 V recommended); - Current consumption: 300 μA - Accuracy: ± 3.5 ppm - Also includes temperature sensor - Communicates on the I 2 C interface at a maximum frequency of 400 kHz - Can memorize: hour, minute, second, day of the week, day of the month, month and year - Two alarms can also be set Package : - 1x DS3231 RTC Module for Raspberry Pi