DS1307 RTC Module with Battery for Raspberry Pi (Compatible with Raspberry Pi 4B)

This RTC module is specifically designed for the Raspberry Pi. It communicates with Raspberry Pi through I2C bus and includes a Maxim DS1307 and CR1220 button cell on the board to keep a real time clock for a long time after the Pi has powered down. Just set a serial port, and you have a convenient way of online debugging using TTL. Supports Raspberry Pi B/A+/B+/2 model B/3 model B/Raspberry Pi 4B.

• RTC module: DS1307
• Battery model: CR1220 button cell
• Operting Voltage: 5V
• I2C address: 0x68
• Clock precision: ±2ppm (0~40°C)
• Unit information: Second, Minute, Date, Week, Month and Year
• Operating temperature: -10°C ~ +85°C
• Compatible with Raspberry Pi B/A+/B+/2 model B/3 model B/Raspberry Pi 4B
• Interface: 2*5p 2.54mm

• Wiki Doc 

• RTC module with Battery for Raspberry Pi x1
• DS1307 Button cell x1