Features: The LM2577 based DCDC step up converter efficiently boosts input voltages up to 40V with 2.5A output, featuring builts in blue LED voltmeter for realtime adjustable voltages monitoring. Equipped with precisions adjustment knob and PCB components, this module ensures stable performances, enhanceds thermal management, and superior antiinterference capability compared to standard converters. for electronics enthusiasts, engineers, and DIYers working on customs power supplies, LED driver, or sound systems requiring voltages regulation. Perfect for automotive electronics prototyping, laboratory equipment upgrades, and portable device power solution where adjustable DCDC voltages control. This power module combines industrial durability with user friendly operations, making it essential for prototyping circuits, renewable energys projects, and precisions voltages sensitive applications. Specifications: Type: DCDC boosters module Materials: Plastic Color: Blue Size:66x36mm ranges: 0-40V Output current: 2.5A Package Includes: 1PC Step Up Converter Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.