DS1302 RTC Real Time Clock Module

The clock operation is configurable between 24 or 12-hour operation with AM/PM indication

The module uses three leads: RST (Reset), DAT (I/O Data), and CLK (Serial Clock). A separate Ground (GND) and Power (VCC) are also used

The power consumption of the module is very low, providing years of use from a single CR2032 battery

Overall board measures 44mm x 23mm (1.8 inch x 0.9 inch) and requires a CR2032 battery (not included)

The module is compatible with both Arduino and Raspberry Pi supporting both 3.3V and 5V operation