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Hengjiaan DS3231 Precision RTC Clock Memory Modules (2 PCS)
Descripition: Temperature range of -40 to +85Deg.C£¬ timing accuracy is maintained at +/-5ppm (+/- 0.432 sec / day) Provide battery backup for the continuous timing Low power consumption Footprints and functionally compatible with the DS3231 Complete clock calendar functions include seconds£¬ minutes£¬ hours£¬ day£¬ date£¬ month and year timing £¬ provide valid until the year 2100 leap year compensation Two calendar alarm 1Hz and 32.768kHz output Reset output and input buttons Debounced High-speed (400kHz) I2C serial bus +2.3 V to +5.5 V Supply Voltage Accuracy of 3Deg.C Digital Temperature Sensor -40 to +85Deg.C operating temperature range 16-pin SO (300mil) package