Features 1.LCD digital display, can display input and output voltage, output current and output power. 2.Input end anti-reverse connection protection, reverse connection will not burn out. 3.It can used for voltage boost and buck, the output voltage can adjusted arbitrarily from 0.5 to 30V, and the current can adjusted arbitrarily from 0 to 4A. 4.The voltage boost and buck chip is used as the main controller, external 60V 75A MOS tube is used as the switch tube, double 60V 5A SS56 schottky is used as the rectifier, with sufficient voltage resistance and sufficient power. 5.Output ripple small, with LC filter. specificationCondition: 100% New Item Type: Step Up Down Module Material: for PCB Color: As Pictures Shown Input Voltage: 5.5-30V Output Voltage: 0.5-30V Output Current: Can work steadily in 3A for a long time and reach 4A under enhanced heat dissipation Output Power: Natural heat dissipation 35W, strengthen heat dissipation 50W Voltage Display Resolution: 0.05V Current Display Resolution: 0.005A Transfer Efficiency: Approx. 88% Input Reverse Connection Protection: Yes Anti Reverse Irrigation at Output End: Yes Short Circuit Protection: Yes Working Frequency: 180KHZ Size: Approx. 66.2x48.1mm/2.61x1.89inch PackageList1 xStep Up Down Module1 x CoolingFin NotePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.