Application: DIY mobile power monitor power supply power buggies camera power supply car power communications equipment supply various right size and weight for demanding applications (such as aviation models etc.). Input voltage: 4.5-28V Output Voltage: 0.8-20V (adjustable) Output current: rated current 3A(MAX). Switching Frequency: 1MHz Output Ripple:less than 30mV Efficiency:96%(max) Operating temperature: Industrial grade (-40 C to +85 C) Module Properties: Non-isolated step-down module (buck) Size:22*17*4mm Package Included 1 x Mini 3A DC-DC Converter Adjustable Step down Power Supply Module replace LM2596s