Blue 3 in 1 LED DS3231SN Digital Clock Temperature Voltage Module DIY Electronic
4,37 €
4, the module size: 40x13mm ultra-small. After the upgrade, the clock error is normal within 10 seconds per month. And then press the left button to enter the cycle to display the alternate interval dF option, press the right button to change the value, the greater the value the longer interval.
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