12V 24V to 3.3V 3.7V 4.2V 5V 6V 7.5V 9V3A optional DC power supply step-down module on-board transformer converter

12V 24V to 3.3V 3.7V 4.2V 5V 6V 7.5V 9V3A optional DC power supply step-down module on-board transformer converter
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sku: 33039824043
$3.33
Shipping from: China
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