Input voltage range: DC5V-35V, AC5V-22VOutput voltage range: DC1.25V-30V (continuously adjustable)Output current range: Maximum continuous working current Less than 3A (input and output difference does not 10V), when the input and output difference exceeds 10V, please the output current is Less than 2A, and the current can reach 5AOperating temperature range: 0C-100C (in order to prevent over-temperature damage, you can increase the heat dissipation by yourself or use other active heat dissipation methods)Dimensions (length, width and height): 86mm X 48mm X 32mmNote: The voltage regulator LM338K of this board is a disassembled part. Please note because the brand new domestic LM338K, the output current will not 2A and it will burn.Colour:As ShownMaterial:PC+metalPackage Contents:1 x LM338K Adjustable Voltage Stabilized Power Supply BoardOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.