Features:
1. The RTC real time clock module itself can adapt to 3.3V and 5V system, no need for level conversion, which is super convenient
2. Provide continuous timing battery backup
3. Complete clock calendar functions include seconds, minutes, hours, day, date, month and year timing , provide valid until the year 2100 leap year
4. Low power consumption
5. Two calendar clock
6. Reset output and anti-shake input

Specification:
1. Temperature Range: -40 ° C to +85 ° C, timing accuracy: +/-5ppm (+/-0.432 sec / day)
2. 1 Hz and 32.768 kHz output
3. High speed (400 KHZ)I2C serial bus
4. Power Supply Voltage:+2.3 V to + 5.5V
5. Precision of digital temperature sensor:+/-3° C

Package Included:
4* DS3231 High Precision Real Time Clock RTC Module