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50pcs HW-520 DC Power Converter Step Down Module DC-DC 2.8V~5.5V input positive and negative 12V output 5V to 12V DC conversion

50pcs HW-520 DC Power Converter Step Down Module DC-DC 2.8V~5.5V input positive and negative 12V output 5V to 12V DC conversion
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sku: 1005005665722151
$36.12
Shipping from: China
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