Arduino I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD I2C RTC DS1307 AT24C32 Real Time Clock Module for Arduino 51 AVR ARM PIC New I2C RTC DS1307 AT24C32 Real Time Clock Module for AVR ARM PIC for Arduino Module RTC I2C DS1307 AT24C32 Real Time Clock For Arduino AVR ARM PIC 51 ARM Description Brand new and high quality Without battry , please know it this is the DS1307 Real Time Clock develope by one of our designer waiman The module comes fully assembled The DS1307 is accessed via the 12C protocol Two wire 12C interface Hour:minutes:seconds AM/PM Day mouth,Date year DS1307 based RTC without LIR2032 battery 1HZ output pin 56 Bytes of Non-volatile memory available to user Size:2.9cm*2.6cm -1.14ich *1.02ich Package 1pcs Arduino I2C RTC DS1307 AT24C32 Real Time Clock