Features: Efficiently convert DC4-30V input to stable 3.3 v output with 4A most current using this compactly bucking converters module, ideal for automotive electronics and embedde systems. Features wide 4-30V input ranges, -20℃-85℃ operational temperature tolerance, and reverse polarity protections with clear marking for safe DIY installations. Perfect for electronics engineers, for developers, and automotive enthusiasts requiring reliable voltages regulation in space constrained projects. Power sensors, IoT devices, and vehicle battery systems while maintaining stable performances in mobiles applications and industrial control environment. The module integrates thermals management capabilities for sustaineds 3A output, making it essential for prototyping lab and portable power solution. Specifications: Component:Plastic Size: Approx.17.5x12mm/0.68x0.48inch Conversion voltages ranges: DC4V to 30V to 3.3 v Output Current: 3A(4A Most) Applicable scenario:Automobile and motorcycle electronic equipment: such as navigation instrument, car audios, LED lights. Package Includes: 5pcs bucking converters Board note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.