Descripton:
Can provide for for arduino libraries and routines
Use DS3231SN precision clock chip, built 32.768 crystal
Can provide precise year, month, day, hour, minute, second, in the morning and afternoon data
You can output 1Hz signal, a second output signal
You can use the CR1220 coin cell holding travel time
The pull-up resistor R1 R2 own welding on the I2C bus
Small size 3cm in diameter
Pin spacing 22.86mm
Package Included:
2* DS3231 DS3231SN RTC Real Time Clock Module