CentIoT – RTC I2C module – DS1307 AT24C32 Real Time Clock Module – without battery
Price: (as of – Details) Battery not included. DS1307 I2C real time clock chip (RTC) 24C32 32K I2C EEPROM memory Using LIR2032 rechargeable lithium battery and charging circuit with DS1307 with battery backup can not solve the problem of literacy . Fully charged, can provide DS1307 timing 1 year. Compact design , 27mm * 28mm