Description: The module itself can adapt to 3.3V and 5V system, no need for level conversion, which is super convenient; Provide continuous timing battery backup; Complete clock calendar function includes second, minute, time, week, date, month, and year, and provide leap year?compensation until 2100;? Low power consumption; Two calendar clock; Reset output and anti-shake input; Specification During -40 ¡ãC to + 85 ¡ã C temperature range, timing accuracy is ¡À5 PPM (¡À0.432sec/day); 1 Hz and 32.768 kHz output; 1 Hz and 32.768 kHz output; High speed (400 KHZ)I2C serial bus; +2.3 V to + 5.5V power supply voltage; Precision of digital temperature sensor is ¡À3¡ãC; Connection diagram: Pls refer to the last photo in above photo window. Package included: 2* DS3231 High Precision Real Time Clock RTC Module See more

for Raspberry pi highest precision clock module DS3231, note board can also use this module. The RTC clock module itself can be adapted to 3.3 V and 5 V system, with -40 ° C to +85 ° C temperature range, easy and convenient to use. The RTC clock module has the characteristic of low power consumption, with 1 Hz and 32.768 kHz output. The RTC clock module is of ±3? digital temperature sensor, and the timing accuracy kept at ± 5ppm (± 0.432 sec / day). The RTC clock module is of complete clock calendar functions include seconds, minutes, hours, day, date, month and year timing , provide valid until the year 2100 leap year compensation.