Cheap And Discounts 3A LM2596S DC-DC Buck Converter Step-down Module 65KHz 5V 12V 24V Adjustable Power Supply Output 1.25V-30V Wholesale. Buy Directly From Merchant Tech Club Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.