Versatile buck converter kit includes 8 mini DC-DC step down modules. Supports a 5-30V input range with adjustable output voltage for flexible power configuration. Compact form factor makes it easy to integrate into tight circuit boards and breadboards for DIY and professional builds. Efficient buck converter design delivers stable voltage regulation with reduced energy loss. Ideal for multi-scenario use such as powering Arduino and microcontroller projects, LED lighting strips, small DC motor systems, classroom electronics experiments, lab demos, automotive accessories, and portable device power management tasks. Built-in safety features help prevent damage from voltage spikes, making these modules reliable for long-term power supply applications. Color: Black. Material: Plastic. Package Contents: 8 x DC voltage reduction modules. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement tolerance: ±1–3 cm.