RTC DS3231 REAL TIME CLOCK I2C ARDUINO UNO MEGA + BATTERY MODULE

Feature : ================================= - Accuracy 2ppm from 0C to +40C - Accuracy 3.5ppm from -40C to +85C - Battery Backup Input for Continuous Timekeeping - Operating Temperature Ranges : 0C to +70C - Low-Power Consumption - Real-Time Clock Counts Seconds, Minutes,Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100 - Two Time-of-Day Alarms - Programmable Square-Wave Output - Fast (400kHz) I2C Interface - 3.3V and 5V Paket : ================================= - 1x RTC DS3231