Description: This module is a versatile DC-DC power modules. It applies to products in the voltage conversion requirements: Input: 3-40V; Output: 1.25V-35V; Maximum current: 3A Regulating the use of adjustable resistance. Characterized by low price, small size, relatively simple function. Specification: Material: FR-4 Epoxy Glass Fiberboard Color: Multi-color Size(LxWxH): Approx. 4.2x2.2x14cm/1.65x0.87x5.51inch Package Includes: 1 piece LM2596S-ADJ module Note: Pls allow an error of 1-3mm due to the difference of manual measurement