Real Time DIY Precision DS3231 RTC Clock Memory Module for Arduino Raspberry Pi Description: Pay attention to the module for Arduino motherboard can also be used. The module itself can be adapted to 3.3 V and 5 V system, no level conversion, it is super convenient! Feature: 1 40℃ to + 85℃ temperature range, timing accuracy in a plus or minus 5 PPM (+/- 0.432 SEC/day). 2. To provide continuous timing battery backup. 3. Low power consumption. 4. The device compatible with DS3231 encapsulation and function. 5. Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year. 6. Two calendar clock. 7.1 Hz and 32.768 kHz output. 8. Reset the output and input button to tremble. 9. High speed (400 KHZ) the I2C serial bus. 10. + 2.3 V to + 5.5 V power supply voltage. 11. The accuracy of plus or minus 3℃ digital temperature sensor. 12. - 40 ℃ to + 85℃ temperature range. Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x Clock Memory Module 1 40℃ to + 85℃ temperature range, timing accuracy in a plus or minus 5 PPM (+/- 0.432 SEC/day). 2. To provide continuous timing battery backup. 3. Low power consumption. 4. The device compatible with DS3231 encapsulation and function. 5. Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year.