11.8 Inch LCD Display: This adjustable power supply regulator module features a 1.8 inch LCD display screen which has excellent contact and a long lasting display. 2Good Heat Dissipation: This voltage regulator module power supply adopts thickened heat sink, contains an external fan port to extend the fan, and the upper and lower boards are connected more reliably and stably. 3Multiple Guards: This buck boost converter has multiple protections, such as anti reverse connection, anti backup, under voltage guard, over voltage guard, over current guard, over temperature guard, over power guard, over time guard, over capacity guard, and over energy guard. 4Independent Silicone Keypad: This step up down transformer board module uses independent silicone keypad to set voltage or current, with one key to enter and one key to exit, fast and concise, refusing to be cumbersome. 5Wide Application: This step up down power supply has a wide range of applications and can be used for electronic equipment testing and calibration, electronics manufacturing, industrial automation control, communication equipment and servers. 1 xStep Up Down Power Supply