5pcs PCF8523 RTC Module Digital Board PCF8523 Real Time Clock RTC 3.3V 5V

Features Works great with a for using our RTC library or with a for Raspberry Pi or similar single board Linux computer The PCF8523 is simple and inexpensive but not a high precision device It may lose or gain up to 2 seconds a day For a high precision temperature compensated alternative please check out the DS3231 precision RTC If you need a DS1307 for compatibility reasons check out our DS1307 RTC This product does not come with a CR1220 coin cell battery We recommend you purchase a coin cell battery to use with this product PCBheader are includedPlugs into any breadboard or you can use wires Description This is a great battery backed real time clock RTC that allows your microcontroller project to keep track of time even if it is reprogrammed or if the power is lost Perfect for data logging clock building time stamping timers and alarms etc Equipped withPCF8523RTC it can run from 3 3V or 5V powerlogic Specification Two mounting holes Package includes 5 x PCF8523 RTC Board