Features: Experience power conversion with our USB to 5.2V, 7.4V, and 9.2V digital display boost cable, perfect for fingerprint lock and more. This cable features three adjustable Voltages outputs with a simple long press to switching, along with a screen that displays current output Voltages. Ideal for individuals who rely on fingerprint lock, safes, routers in their daily lives. Perfect for home security setups, office environment, or any place where reliable power supply is suitable for your electronic devices. Suitable for power and USB adapters, this universal charging solution ensures your devices is always power and ready to go. Specifications: Component:Plastic Size:Approx.24cm/9.45inch Package Includes: 1Pc Power Cable note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.