uxcell DS3231 AT24C32 IIC RTC Clock Timer Memory Module for Arduino

Great Sensors for Arduino Project. Having Fun With Electronics and Programming! Description: DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. DS3231 has some other features that extend the system host of additional features and a range of options. The device can incorporates a CR2032 battery input (NOT INCLUDED), disconnect the main power supply and maintains accurate timekeeping. RTC maintains seconds, minutes, hours, day, date, month, and year information and date is automatically adjusted for months with fewer than 31 days, including corrections for leap year up to years of 2100. The working format of the clock module can be 24 hours type or 12 hours with/AM/PM indication. Specification: PCB Size: 38mm x 22mm (L*W) Operating Voltage: 3.3V - 5.5V Clock Chip: high-precision clock chip DS3231 Accuracy: 2ppm in range of 0-40 degree celsius. About 1-minute error in 1 year. Two calendar alarm clock Programmable square-wave output Chip temperature sensor comes with +/-3 Celsius accuracy Memory Chips: AT24C32 (storage capacity 32K) IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V) Fixed Hole Dia: 2.3mm Wiring Information: VCC----5V GND----GND Note: Don't inclue battery Package Includes: 1 x Time Clock Module