RTC DS3231 High Precision Clock Module

If you're looking for an external clock for your Arduino and Raspberry Pi devices, this item is for you. The RTC DS3231 High Precision Clock Module lets you keep track of time even when power is interrupted. It is best used in scheduled applications such as data logging, alarms, and time stamping. 

Specifications:

• to 40 C to + 85 C temperature range, timing accuracy in a plus or minus 5 PPM (+/- 0.432 SEC/day)
  
• To provide continuous timing battery backup
  
• Low power consumption
  
• The device compatible with DS3231 encapsulation and function
  
• Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year
  
• Two calendar clock
  
• 1 Hz and 32.768 kHz output
  
• Reset the output and input button to tremble
  
• High speed (400 KHZ) the I2C serial bus
  
• + 2.3 V to + 5.5 V power supply voltage
  
• The accuracy of plus or minus 3 C digital temperature sensor
  
• - 40 C to + 85 C temperature range

Inclusions: 1 x RTC DS3231 High Precision Clock Module 

Documents:

• Datasheet
  
• Demo code