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Arduino Uno R3 - Original Made in Italy

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XL7015 DC-DC Buck Converter Step Down Module.

XL4015 5A DC to DC CC CV Lithium Battery Step Down Charging Board.

 XL4015 5A DC to DC CC CV Lithium Battery Step Down Charging Board. 

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 XL4015 5A DC to DC CC CV Lithium Battery Step Down Charging Board. 

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