Real-time clock module. It allows you to read the time in the form of hours, minutes and seconds and date: month, day, year. The battery used in this module is the popular CR2032 Lithium Cell 3V battery. The module automatically charges the battery. The diode prevents the "reverse" current. Specification: Module with the real time clock DS3231 It allows you to read the time in the form of hours, minutes and seconds and date: month, day, year. The communication interface is the I2C bus (SDA and SCL lines) The data refresh rate is 1 Hz (1 second). Available data: Time: hour (AM, PM), minute, second, Date: month, day, year Accurate calendar up to the year 2100 The module has goldpin header enabling connection to any Arduino kit or a dedicated PCB using the available cables. Compatible with arduino UNO and MEGA 2560 Application for contact plates, arduino etc. Module parameters: RTC DS3231 real time clock module Has AT24C32 memory Chip DS3231 Power 2.3-5.5V Battery basket: CR2032 Current consumption: less than 200 nA Communication via SPI bus (SDA, SCL) Bus address: 0x68 Communication interface: I2C Refresh rate: 1 Hz (1 second) Gives: seconds, hours, minutes, months, days of the week and years Accuracy: at a temperature of 0 ° C to +40 ° C: +/- 2 ppm at a temperature of -40 ° C to +85 ° C: +/- 3.5 ppm Dimensions: 38 x 22mm Pinout: The 5V supply voltage is connected to the pin marked with the same symbol. The I2C bus should be connected to the pins SCL - clock line SDA - data line. The SQW pin is the square wave output with the selected frequency GND is the mass of the system. Set contains: - RTC DS3231 AT24C32 time module - precise I2C clock - 1 pc - Battery - 1 pc https://elecena.pl/product/22604996/high-precision-ds3231-at24c32-rtc-i2c-clock-module-battery 2023-02-22 https://elecena.pl/product/22604996/high-precision-ds3231-at24c32-rtc-i2c-clock-module-battery 2023-05-26 https://elecena.pl/product/22604996/high-precision-ds3231-at24c32-rtc-i2c-clock-module-battery 2023-06-14 https://elecena.pl/product/22604996/high-precision-ds3231-at24c32-rtc-i2c-clock-module-battery 2025-10-25 https://elecena.pl/product/22604996/high-precision-ds3231-at24c32-rtc-i2c-clock-module-battery 2025-10-29