LM317 Adjustable Voltage Regulator Buck Boost Power Supply Board AC 5V-20V to DC 1.25V-30V Step Up Step Down Board

LM317 Adjustable Voltage Regulator Buck Boost Power Supply Board AC 5V-20V to DC 1.25V-30V Step Up Step Down Board
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sku: 1005004934589771
$3.99
Shipping from: China
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