Catalog > Internet of Things (IOT) Related Products > More Platforms Catalog > Consumer Electronics > Kits > Smart Kits ChronoDot V2.0 Real-time Clock Module ChronoDot V2.0 Real-time Clock Module HKD I2C REAL TIME CLOCK- DS3231S RTC I2C DS3231SN ChronoDot V2.0 Real-time Clock Module 118.96 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Can provide arduino library files and routines Using DS3231SN high-precision clock chip, built-in 32.768 crystal Can provide accurate year, month, day, hour, minute, second, morning and afternoon data Can output 1Hz signal, output a signal per second You can use the CR1220 button battery to keep going I2C bus pull-up resistor welding R1 R2 Small size 3cm in diameter Pin spacing 22.86mm