ITEM NAME:1 x Arduino DS3231 AT24C32 IIC Module Precision RTC Real time Clock Me IYN Descriptio n Description: DS3231 Is Low Cost, High Precision I2C Real-Time Clock (RTC), With Integrated Temperature-Tonic Crystal Oscillator (TCXO) And Crystal. The Device Contains A Battery Input To Maintain Accurate Timing When Disconnected From The Main Power Supply. The Integrated Crystal Oscillator Improves The Long-Term Precision Of The Device And Reduces The Number Of Components In The Production Line. The DS3231 Offers Commercial - And Industrial-Grade Temperature Ranges With 16 Pin 300mil SO Packages. The RTC Keeps Information In Seconds, Minutes, Hours, Days, Days, Months And Years. Months With Less Than 31 Days Will Automatically Adjust The Date Of The End Of The Month, Including The Leap Year Correction. The Working Format Of The Clock Can Be 24 Hours Or 12 Hours With /AM/PM Indication. Provides Two Settable Calendar Alarm Clock And A Settable Square Wave Output. Address And Data Are Transmitted Serially Through I2C Bi-Directional Bus. Sophisticated, Temperature-Compensated Voltage Reference And Comparator Circuits Monitor VCC Status, Detect Power Failures, Provide Reset Output, And Automatically Switch To Backup Power When Necessary. In Addition, The /RST Monitoring Pin Can Be Used As Manual Input To Produce A Mup Reset. In Addition To High Timing Accuracy, The DS3231 Also Has Some Other Features That Extend The Additional Functions And Selection Range Of The System Host. The Device Incorporates A Very Accurate Digital Temperature Sensor That Can Be Accessed (As In Time) Through An I2C* Interface. The Accuracy Of The Temperature Sensor Is  ±3 °C. The On-Chip Control Circuit Enables Automatic Power Detection And Manages Power Switching Between The Main Power Supply And The Standby Power Supply (I.E., The Low-Voltage Battery). If The Main Power Supply Fails, The Device Can Continue To Provide Accurate Timing And Temperature Without Affecting Performance. The On-Chip Reset F.The Accuracy Of The Temperature Sensor Is  ±3 °C. Clock Chip: High Precision Clock Chip DS3231. The Working Format Of The Clock Can Be 24 Hours Or 12 Hours With /AM/PM Indication. Provides Two Settable Calendar Alarm Clock And A Settable Square Wave Output.