DS3231 Real Time Clock Module I2C (RTC high precision) (OT2118-A47)

Real time clock module with the DS3231 chip (. This module ensures that the Arduino knows the exact time at any time. By connecting the Arduino to the ´sqw´ pin, it is possible to generate an interrupt every second with which sensor values or a display can be addressed. DS3231 module properties: Communication: I2C interface. Keep track of the time precisely, even when the module is not connected (backup battery) Year - month - day hour: minute: second Connection for a trigger with interval (1Hz, 4kHz, 8kHz, 32kHz) 56 Bytes Non-volatile memory Greater precision than the DS1307 Additional memory chip: AT24C32 (32K bytes) Built-in temperature sensor (deviation of ±3 °C) Supplied without battery Note: use rechargeable battery LIR2032 Dimensions Length: 3.9cm Width: 2.2cmHeight: 1.2cm