LM317 dc-dcConverter Step-Down Board Buck Module Variable Power Supply dc-dc 4.2~40V to 1.2~37V Adjustable Module

LM317 dc-dcConverter Step-Down Board Buck Module Variable Power Supply dc-dc 4.2~40V to 1.2~37V Adjustable Module
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sku: 4000392991572
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$2.49
Shipping from: China
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