Feature:1. Reserved 5V Fan Interface: The power supply module comes with a 5V fan interface for optional fan cooling expansion, supporting fans with a current of up to 150mA and compatible with 30mm size fans, fixed with M3.2x19 screws.2. Gold Plated LCD Display Panel: The LCD display panel features a gold plating process to prevent oxidation and poor contact, ensuring long lasting clear display with a large 1.8 inch screen and a visible range of 36x29mm.3. Independent Silicone Buttons: With independent silicone buttons for voltage or current settings, this DC buck boost converter offers 1 key access and exit for quick and simple operation, eliminating complexity.4. Dual Latch Housing: The DC voltage converter is equipped with dual latches on the housing for a more reliable and stable connection between the top and bottom boards. It also features upgraded plug in terminal blocks for easy disassembly and replacement.5. Separate Board Architecture: The top and bottom boards have independent structures with separate MCUs, allowing for interchangeable LCD or color display panels and independent use of the power board.Specification:Item Type: DC to DC Buck Boost ConverterMaterial: ABSWeight: Approx. 122.00g/4.3ozProduct Size: Approx. 83x48x25mm/3.3x1.9x1.0inInput Voltage: 6 to 36.00VOutput Voltage: 0.5 to 36.00VOutput Current: 0 to 4.5AOutput Voltage Accuracy: 0.3%+3 digits (calibratable)Output Power: 40WOutput Current Accuracy: 0.5%+3 digits (calibratable)Voltage Resolution: 0.01VCurrent Resolution: 0.001AData Group Storage: 11 groupsSilicone Buttons: 5Buzzer: YesConversion Efficiency: Approximately 88%Soft Start: YesInput Reverse Connection Prevention: YesOutput Reverse Flow Prevention: YesInput Under Voltage Prevention (LUP): Adjustable from 5.5 to 35V, factory default 5.5V.Package List:1 x DC to DC Buck Boost Converter