100% Brand new and high quality!

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 to hold travel time

The pull-up resistor R1 R2 own welding on the I2C bus

Small size 3cm in diameter

Pin spacing 22.86mm

Colour: Blue

Size: diameter 3cm

1 x For Arduino RTC IIC I2C IIC DS3231SN Real Time Clock Module ChronoDot V2.0