Feature: 1. Easy Operation: Individual silicone buttons on the buck boost converter set voltage or current. 1 click to enter, 1 click to exit, fast and easy, avoid tediousness. 2. 1.8-inch LCD Display: The step up down power supply features a 1.8-inch LCD display where you can clearly see data for convenient use, improving efficiency. 3. Enhanced Performance: The buck boost module has upgraded power, thicker heatsink, external fan port for optional expansion. More reliable and stable connection for upper and lower boards. 11 storage spaces available. 4. Multiple Protections: The buck boost converter has reverse connection, reflux, undervoltage, overvoltage, overcurrent, overheating, overpower, timeout, overcapacity, and over-energy protection. 5. Independent Upper and Lower Board Architecture with Independent MCU: Convenient replacement of LCD or color screen panels. The power board can be used independently. Specification: Item Type: Buck Boost Converter Material: ABS, Silicone, Aluminum Alloy Input Voltage: 6-36V Output Voltage: 0.5-36V Output Current: 0-4.5A Output Voltage Accuracy: 0.3%+3 digits (calibratable) Output Power: 40W Current Resolution: 0.001A Data Group Storage: 11 groups Display Size: 1.8-inch upgraded display, approx. 36 x 29 mm / 1.42 x 1.14 inches visible area Conversion Efficiency: About 88% Buzzer: Yes Soft Start: Yes Safety Mechanism: Input Reverse Connection Safety: Yes Output Anti-Reflux Safety: Yes Input Undervoltage Safety (LUP): Adjustable from 5.5-35V, default 5.5V Output Overvoltage Safety (OUP): Adjustable from 0.5-37V, default 37V Output Overcurrent Safety (OCP): Adjustable from 0.001-4.6A, default 4.6A Output Overpower Safety (OPP): Adjustable from 0.01-41W, default 41W Over Temperature Safety (OTP): Adjustable from 30-99, default 90 Timeout Safety (OHP): 1 minute to 99 hours 59 minutes, default off Overcapacity Safety (AH): Adjustable from 0.001-9999Ah, default off Over-Energy Safety (OPH): Adjustable from 0.001-4000KWh, default off. Package List: 1 x Step Up Down Power Supply Note: