Geekstory 2PCS DS3231 AT24C32 IIC RTC Clock Module High Precision Real Time Clock Module Sensor for Arduino DIY

Product Description: Size: 38mm (length) * 22mm (W) * 14mm (height) Operating voltage :3.3 - 5 .5 V Clock chip: high-precision clock chip DS3231(there are 3 different chips for this clock module, DS3231N,DS3231SN and DS3231M, we send it by randomly Clock Accuracy :0-40 ? range, the accuracy 2ppm, the error was about 1 minute Calendar alarm clock with two Programmable square-wave output Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation Chip temperature sensor comes with an accuracy of ± 3 ? Memory chips: AT24C32 (storage capacity 32K) IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V) Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57 Wiring instructions (with Arduino uno r3 for example): SCL ? A5 SDA ? A4 VCC ? 5V GND ? GND Document link: http://tronixlabs.com/breakout-boards/real-time-clock/ds3231-real-time-clock-module/ Note: Battery is not included Package Included: 2 x DS3231 Clock module