Precision RTC Real Time Clock Memory Module

Size: 38mm (length) * 22mm (W) * 14mm (height)

Operating voltage :3.3 – 5 .5 V

clock chip: high-precision clock chip DS3231

Clock Accuracy :0-40 ℃ range, the accuracy 2ppm,  the error was about 1 minute

Calendar alarm clock with two

Programmable square-wave output

Real time clock generator seconds, minutes, hours,  day, date, month and year timing and provide valid until the year 2100 leap year  compensation