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Amazon.com: DROK® LM2596 Analog Control Buck Converter DC-DC Step-down Transformer Voltage Regulator Module 36V 24V 12V to 5V 2A Power Inverter Volt Stabilizer with Red LED Display Voltmeter Board Input/Output Voltage :
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LM2596 DC-DC Buck Converter Step Down Module, 4.5V-35V, 1.3V-30V