831D 3pcs 20A 300W CC CV Step Down Modules Adjustable 6-40V to 1.2-36V Voltage-Regulator BuckConverter Constant Current

831D 3pcs 20A 300W CC CV Step Down Modules Adjustable 6-40V to 1.2-36V Voltage-Regulator BuckConverter Constant Current
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sku: 1005005223321358
$19.14
Shipping from: China
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