Description: The IN- (input negative), IN+ (positive input), OUT- (output negative) and OUT+ (positive output) marked on the module must be connected correctly, otherwise the module may be damaged. The buck power converter input voltage range is DC 5V-32V, output voltage range is DC 0.8-30V, output current is 5A(Max). Note: 32V is the highest input voltage limit, please leave some room to use or it will be damaged. It is a step down regulator module, the input voltage must be 2V higher than Output voltage. 100% brand new, high quality. Specification: Module Properties: non-isolated step down module Rectification: non-synchronous rectification Input voltage: 5V-32V Output voltage: 0.8V-30V Output current: adjustable maximum 5A Conversion efficiency: 95% (the highest) Switching frequency: 300KHz Output ripple: 50mV (max) 20M bandwidth Load Regulation: 0.5% Voltage Regulation: 2.5% Operating Temperature: -40to +85 Size (LxWxH): Approx. 51x26.3x14 mm / 2.00x1.03x0.55 inch Package Includes: 1 Piece step down power module Note: Before purchasing, please check whether the products are compatible with your products; and after receiving, please check the packages as below, including quantity, color, and so on. If you have any problems, please contact us via eBay messaging at any time.