1 Size: 38mm (length) * 22mm (W) * 14mm (height)
2 Weight: 8g
3 Operating voltage :3.3 - 5 .5 V
4 chip: high-precision DS3231
5 Clock Accuracy :0-40 ° range, the accuracy 2ppm, the error was about 1 minute
6 two calendar alarm clock
7 programmable square-wave output
8 accurate timing from second to year and valid leap year compensation until the year 2100
9 temperature sensor in the chip and with an accuracy of ± 3 °
10 memory chips: AT24C32 (storage capacity 32K)
11.IIC bus interface, the maximum transmission speed 400KHz (working voltage 5V)
12 can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
13 with rechargeable battery LIR2032, to ensure the system after power failure, the clock move any natural normal
14 Packing: single anti-static packaging
Wiring instructions (for Arduino uno r3 for example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND
Note: battery not included.
