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5V-12VAT89C2051多機能6デジタルLEDDIY電子時計キット
US$4.99 US$6.99

Q: how to set backup battery and battery voltage

尋ねた malabi8025 に 2018-06-29 06:31:51

DOC BOB OK for 3V battery: can you, please, explain the connections? Thank you & best regards

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