Features 1、LCD Display: The large 1.8 inch screen features gold plated craftsmanship to prevent oxidation, ensuring clear and long lasting display. Screen size is 36x29mm for enhanced visibility. 2、Independent Silicon Buttons: Easily set voltage or current with silicone buttons. One click entry and exit for quick and efficient operation, boost buck voltage regulator eliminates complexity. 3、Enhanced Performance: Upgrade in power with the option to connect an external fan for improved efficiency. Adjustable input under voltage prevention (LUP) with factory default at 5.5V. 4、Double Buckle Shell: The top and bottom plates are securely connected for stable performance. The independent MCU allows easy replacement of LCD or color display screens. 5、Versatile Design: The self adjusting voltage power module allows for easy regulation of 90W with adjustable output voltage and current accuracy. Suitable for a wide range of applications. Specifications Item Type: Boost buck voltage regulator Material: ABS Weight: Approx. 131.00g / 4.62oz Output Current: 0-4.5A Output Power: 90W Output Current Accuracy: ±0.5%+3 digits (calibratable) Current Resolution: 0.001A Data Group Storage: 11 groups Silicone Keys: 5 Buzzer: Support Conversion Efficiency: Approximately 88% Soft Boot: Support Input Reverse Connection Guard: Support Output Reverse Charging Guard: Support Product Size: Approx. 83x48x25mm / 3.3x1.9x1.0in LCD Display Screen Size: Approx. 36x29mm / 1.4x1.1in Package List 1 x Boost Buck Voltage Regulator