Waveshare RTC PCF8563 clock module

Module with a precise real time clock (RTC) DS3232. It has an integrated crystal resonator, built-in SRAM memory and communicates via the I2C interface. DFRobot DFR0821

Module with real time clock (RTC) PCF8523 dedicated for minicomputers Raspberry Pi. It communicates via the I2C interface. Adafruit 3386

Module with the real time clock (RTC) RV-3028 dedicated to micro:bit. It communicates via the I2C interface. SparkFun SEN-15486

Adafruit 255 - ChronoDot - Ultra-precise Real Time Clock - v2.1

Module with a precise real time clock (RTC) DS3231. It has an integrated crystal resonator and communicates via the I2C interface. Adafruit 5188

Module with a precise clock RTC DS3231. Communication via the I2C interface. Waveshare Pico-RTC-DS3231

Real time clock (RTC) module. It allows you to read data about the date and time. Communication with the module takes place via the I2C interface. SparkFun BOB-14558

Real-time clock with PCF8563 chip and battery backup. Modally MOD-48.Z

The RTC module with the Dallas DS1307 system and Atmel AT24C32 memory is a compact and energy-saving module that combines a precise real-time clock with 32 kb EEPROM memory, communicates via the I2C interface and time backup with a CR2032 battery, ideal for integration with microcontrollers in various electronic projects

Module with a precise real time clock (RTC) DS3231. It has an integrated crystal resonator and communicates via the I2C interface. DFRobot DFR0819

The DS3231 Real Time Clock (RTC) module with CR2032 battery is a precise and reliable I2C enabled component that provides time and date tracking, maintains accuracy when main power is disconnected, and offers alarm and wake-up functions with easy connectivity to various platforms such as such as Arduino, Raspberry Pi or STM32

The DS1307 RTC Module is a real-time clock module and a CR1220 battery backup battery. Communicates via the I2C interface. DFRobot DFR0386

RTC DS1302 real time clock module with CR2032 battery holder and solder pins

KAmodM41T82 is a module with the STMicroelectronics M41T82 RTC clock. The chip allows precise timing, and an additional battery connector allows you to maintain the power supply when the main power is turned off. Communication with the module is realized via I2C bus.

The SD3031 precision real-time clock (RTC) module. It has an integrated quartz resonator, on-board SRAM and communicates via an I2C interface. DFRobot DFR0998

Module with real time clock (RTC) DS1307 and CR1225 battery socket. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020013