new 20pcs LM2596 LM2596S-ADJ DC-DC 4.5-40V adjustable step-down power Supply module NEW ,High Quality green D

new 20pcs LM2596 LM2596S-ADJ DC-DC 4.5-40V adjustable step-down power Supply module NEW ,High Quality green D
sku: 32859449595
$9.21
Shipping from: China
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