Two time-of-day alarms
Operation voltage: 3.3-5.5V
Fast (400kHz) I2C Interface
Memory chips: AT24C32 (storage capacity 32K)
Application: Servers/Telematics/Utility Power Meters/GPS
DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module . Calendar alarm clock with two programmable square-wave output . Generating seconds, minutes, hours, day, month and year information.
Wiring instructions :
SCL?A5 SDA?A4 VCC?5V GND?GND
Package included: 5 X DS3231 AT24C32 IIC module with battery 20 X Female to male cable