High Efficiency & Precision: This -ADJ module efficiently steps down DC voltage from 3-40V to a lower voltage, maintaining a steady output despite input fluctuations. Ideal for electronics projects and power management. Versatile Application: Suitable for a wide range of applications, including DIY electronics, automotive modifications, and as a reliable power source for electronic devices. Compact & : Designed with robust components in a compact form factor for easy integration into your projects without sacrificing reliability or performance. Color: Black Material: plastic Package Contents: 10 * Voltage stabilized power supply 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.