4A 30/35W/35W/35W DC-DC 4.8/5.5-30V To 0.5-30V Automatic Buck Boost Converter Step Up Step Down Power Supply Module

4A 30/35W/35W/35W DC-DC 4.8/5.5-30V To 0.5-30V Automatic Buck Boost Converter Step Up Step Down Power Supply Module

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