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20A Adjustable Converter Module for LED Lighting 6-40V Input Voltage Range

Voltage Reducer with LED Display, Input 3.5V-30V - Red/ Green /Blue

High Voltage Boost Module 7.4V Input Generates 5kV to 15kV Spark Output

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Adjustable LM2587 DC DC Boost Converter Module 434V Input 5V to 60V Power 3A