This is a great DC to DC step-up converter module for electric equipment, digital products, etc. The boost converter can convert 2V~24V DC to maximum 28V DC, output voltage is adjustable with potentiometer. The maximum output current can be up to 2A. High efficiency, the conversion efficiency can be more than 93%. Widely used for storage battery, power transformers, DIY adjustable regulated power supply, industrial equipment, 5V, 9V, 12V, 28V output, etc. Specifications: Input Voltage: 2V~24V Max. Output Voltage: 28V Max. Output Current: 2A Efficiency: >93% Size: 36*17*14mm/1.41*0.67*0.55" Package Includes: 1 x Boost Converter Module