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. The versatile buck converter kit includes 8 mini DC-DC step down modules, supporting a 5-30V input range with adjustable output voltage for flexible power configuration. The efficient buck converter design delivers stable voltage regulation with reduced energy loss, helping protect sensitive components in complex circuits. Built-in safety features aid in preventing damage from voltage spikes, making these modules reliable for long-term power supply applications. Color: Black Material: plastic Package Contents: 8*DC voltage reduction modules Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.