Features 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. Specifications Item Type: DC to DC Buck Boost Converter Material: ABS Weight: Approx. 122.00g/4.3oz Product Size: Approx. 83x48x25mm/3.3x1.9x1.0in Output Current: 0 to 4.5A Output Power: 40W Output Current Accuracy: ±0.5%+3 digits (calibratable) Current Resolution: 0.001A Data Group Storage: 11 groups Silicone Buttons: 5 Buzzer: Yes Conversion Efficiency: Approximately 88% Soft Start: Yes Input Reverse Connection Prevention: Yes Output Reverse Flow Prevention: Yes Package List 1 x DC to DC Buck Boost Converter