DS3231 IIC Mini Module Real Time Clock RTC 3.3V/5V Raspberry Pi Arduino Low Power

Raspberry Pi foreign highest precision clock module DS3231 Note that this module can also be used for Arduino motherboard. Note this module doesn't have battery holder and battery. The module itself can adapt to 3.3V and 5V systems without level conversion, which is super convenient. Characteristic: 1. In the temperature range of -40°C to +85°C, the timing accuracy is maintained at ±5ppm (±0.432 seconds/day) 2. Provide battery backup for continuous timing 3. Low power consumption 4. Device package and function are compatible with DS3231 5. The complete clock calendar function includes seconds, minutes, hours, week, date, month and year timing, and provides leap year compensation valid to 2100 years 6. Two calendar alarm clocks 7.1Hz and 32.768kHz output 8. Reset output and button debounce input 9. High-speed (400kHz) I2C serial bus 10.+2.3V to +5.5V supply voltage 11. Digital temperature sensor with accuracy of ±3°C 12. -40°C to +85°C operating temperature range 13.16-pin SO (300mil)