Parameters:

• Size: 38mm (length) * 22mm (W) * 14mm (height)

• Operating voltage :3.3 - 5 .5 V

• Clock chip: high-precision clock chip DS3231

• 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

• With rechargeable battery LIR2032, to ensure the system after power failure, the clock move any natural normal

• Packing: single anti-static packaging