Compact and versatile, this USB 5V adjustable timer power-off control cable offers a simple and reliable way to manage power supply for your USB-powered devices. Designed for convenience and ease of use, it is ideal for various applications where automated power control is required. Key Features: - Small and portable design, easy to carry and quick to set up - Compatible with a wide range of devices such as USB fans, blowers, USB water pumps, USB lights, fish tanks, and data cables - Supports 5V 2A power, ensuring stable performance for most USB-powered equipment - Plug-and-play functionality with a total cable length of 140 cm for flexible placement - Adjustable countdown timer ranging from 5 minutes to 24 hours and 55 minutes, allowing precise power-off control - Dedicated to power control only (no data transmission capability) Practical Use Scenarios: 1. Automatically turn off a USB aquarium pump or light after a set time to save energy and improve convenience. 2. Control a USB desk fan to operate only during your work hours, preventing unnecessary power consumption. 3. Schedule a USB light to shut off during nighttime or when no longer needed. Whether for home, office, or hobby use, this adjustable USB timer cable offers a smart and efficient way to control your devices, ensuring both convenience and energy savings.