Precision DS3231 Real Time Clock Module

Features:
1. -40°C to +85°C temperature range, timing accuracy kept at ± 5ppm (± 0.432 sec / day)
2. Timed to provide continuous battery backup
3. Low-power
4. Two calendar alarm
5. Device package and function compatible with the DS3231
6. Complete clock calendar functions include seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation.
7. 1Hz and 32.768kHz output
8. -speed (400kHz) I2C serial bus
9. Reset button debounced input and output
10. +2.3 V to +5.5 V Supply Voltage
11. ± 3°C accuracy digital temperature sensor
12. -40°C to +85°C operating temperature range