RTC DS1307 real-time clock Arduino module

The DS1307 RTC real-time clock, compatible with Arduino, Raspberry Pi, ESP8266 and Banana Pi, is powered by a 5V CR2032 battery. The DS1307's integrated chip and 24C32 memory enable precise measurement of seconds, minutes, hours, days, weeks, months and years (including leap years). Equipped with 12 or 24 hour mode with AM/PM indication. The clock uses a 32.768 kHz quartz frequency and communicates via an I2C interface. The product has mounting holes with a diameter of 3 mm and compact dimensions of 27 x 27 x 10 mm. Circuit markings can be seen in the actual product images. Specification:

* Battery power supply: CR2032 5V

* Chip: DS1307

* Memory: 24C32

* Quartz frequency: 32.768 kHz

* Communication: I2C

* Mounting holes with diameter: 3 mm

* Dimensions: 27 x 27 x 10 mm