This compact real-time clock (RTC) module keeps accurate time using a DS1307 RTC chip and a replaceable battery. With an onboard 24C32 32K EEPROM for data storage, it's a versatile addition to Arduino projects requiring date, time, and non-volatile memory — such as clocks, data loggers, and timers.

Key Features

• DS1307 RTC Chip – Accurate timekeeping with battery backup
• 24C32 EEPROM – 32K non-volatile memory for data storage
• I²C Interface – Simple two-wire connection to Arduino
• Battery Backed – Keeps time when main power is off (approx. 1 year)
• Replaceable Battery – Uses standard CR2032 button cell (3.6V battery supplied)
• Read/Write Functionality – Set and read date/time programmatically

Specifications

• RTC IC: DS1307
• EEPROM: 24C32 (32K)
• Interface: I²C
• Supply Voltage: 5V
• Battery Life: Approx. 1 year (fully charged)
• Dimensions: 28×28×7mm

Ideal For

• Arduino clocks and alarm projects
• Data loggers with timestamped records
• Scheduled automation and timer systems
• Any project needing persistent date/time tracking

Package Contents

• 1× DS1307 RTC module with 24C32 EEPROM
• 1× 3.6V battery (installed)