Features: This 5V USB timer cable features a 1-12 hour adjustable countdown display with 12 preset intervals, offering precise energy management for devices like aquariums, LED lights, and fans via simple button controls. Built with a 60cm durability cable and double control buttons, it delivers 5V/2A output matching input voltages while excluding data transfer capabilities for focused power management. Ideal for homeowners and office professional automated solution to optimize energy consumption for small appliances and electronics. Perfectly controls aquarium pumps, desk fan, or charging stations in kitchens, workshops, or tight spaces behind electronics with its compact, space saving design. The integrated auto shutoff function minimizes device wear by cutting power after preset durations, extending equipment life while reducing energy costs effectively. Specifications: Component： Plastic Length: 60cm/23.62in Interfaces: USB male input, USB female output output: 5V/2A output Time: 1-12 hours USB timing line is used for fish tanks, ceiling fans, LED lights Package Includes: 1 USB timing line note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.