Features:The input voltage range is 4V to 38V DC, and the output voltage is adjustable from 1.25V to 36V.These buck module can be remarkably efficient, and the maximum efficiency can be up to 96%), making them very useful. This set contains total 10 pieces DC-DC buck modules that you can use for many different projects.They are great step-down modules for accumulator, power transformer, DIY adjustable regulated power supply, laptop power supply on car and industrial equipment.Specifications:Type: Non-isolated DC-DC step-down moduleOutput Current: 0A to 5AOutput Power: 75WOperating Temperature: -40C~+85CFrequency: 180KHzEfficiency: 96%(Max.)Load Regulation: S (I)0.8% (input 24V, output 12V, load measured from 1~4.5A variation)Short Circuit Protection: Yes ( limit current 8A)Over Temperature Protection: Yes (shut off output automatically)Mounting Method: 2pcs 3mm screwsWiring Method: SolderingSize: 54 x 23 x 15mm / 2.12 x 0.9 x 0.59"Quantity: 10.