Description:

At 0 ° C to + 40 ° C range, accuracy of ± 2ppm

At -40 ° C to + 85 ° C range, accuracy of ± 3.5ppm

Provide battery backup for uninterrupted time input

Operating Temperature Range

Industrial: -40 ° C to + 85 ° C

Commercial Grade: 0 ° C to + 70 ° C

Low power consumption

Real-time clock counts seconds, minutes, hours, day, date, month and 

year information has valid until 2099 Leap Year Compensation

Offers two regular alarm clock every day

Programmable square-wave output

4MHz SPI interface, support for modes 1 and 3

Digital Temperature Sensor Output: Accuracy of ± 3 ° C

Aging correction register

RST Input / Output

300mil, 20-pin SO package

Package Included:

1 X DS3234 Ultra-precision Real-time Clock Module

Note: don‘t inclue battery,it only need 0.01 dollars,it‘s not safty to ship by air mail.hope you can understanding