High Precision DS3231 Real Time Clock Module RTC DS3231 3.3V/5V with Battery for Arduino Raspberry P

Description:
Highest precision clock module DS3231 in foreign countries. Note that this module can also be used for Arduino motherboard. The module itself can adapt to 3.3V and 5V systems without level conversion, which is super convenient.
Features:
1. -40a to +85atemperature range, timing accuracy kept at ± 5ppm (± 0.432 sec / day) 2. Timed to provide continuous battery backup 3. Low-power 4. Device package and function compatible with the DS3231 5. Complete clock calendar functions include seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation 6. Two calendar alarm 7. 1Hz and 32.768kHz output 8. Reset button debounced input and output 9. Speed (400kHz) I2C serial bus 10. +2.3 V to +5.5 V Supply Voltage 11. ± 3a accuracy digital temperature sensor 12. -40a to +85a operating temperature range 13. 16-pin SO (300mil) package
Package included:
1 xClock Module