DC-DC Buck-Boost Converter Adjustable CC CV Step Up Down Power Supply Module E
Note: There is a cooling fan with 50W, but aluminium heatsink with 35W pls read it before purchasing. Output power: 35W/50w. Output current: 3A/4A. DIY Flat Belt Screw Leather Craft Chicago Nail Brass Solid Rivets Stud Head I.