USB Countdown Power Off Switch – Efficient Timer Control for 5V Devices • Plug and Play USB Connectivity: The USB interface ensures quick and easy setup without extra tools or software. Simply connect to a power source to control and automate desktops, LED lights, or aquarium equipment. • Adjustable Countdown Timer: poweroff times anywhere from 5 minutes to 24 hours using simple knob controls. Choose between 1hour or 5minute increments for precise scheduling that matches your daily routine. • AquariumFriendly Automation: Ideal for fish tank management, this switch can automatically turn off lights, pumps, or other 5V accessories to help maintain a stable, healthy aquatic environment. Reduces manual checks and saves time in home or office setups. • Clear Digital Display: A builtin screen shows realtime countdown progress, allowing you to easily monitor remaining time and ensure accurate operation every use. • Wide Compatibility: Designed to work with most 5V USBpowered devices including fans, LED strips, desk gadgets, and small pumps, making it a versatile solution for multiple applications. • Compact and Portable: Small and lightweight design means you can move it between workstations, living spaces, or hobby setups without hassle. Use Scenarios: 1. Home Office – Schedule your desk fan or USB light to turn off after work hours automatically. 2. Aquarium – Automatically power off your aquarium lighting or circulation pump to optimize fish health. 3. DIY Electronics – Manage timed experiments or device operation without constant supervision. This USB Countdown Power Off Switch is built for reliability, ease of use, and precise timer control, making it an efficient tool for managing your 5V devices with minimal effort.