This USB-powered adjustable timer switch cable is designed to provide automatic control for aquarium lighting systems. Its sleek and durable design ensures seamless integration into your fish tank setup. The timer allows users to set precise countdowns, ensuring optimal lighting conditions for aquatic organisms while reducing energy consumption. Features -Color:Black -Material:Plastic -Size:40.00X3.50X2.80cm/15.72X1.38X1.10in -Precise timing function: easily set any power-off time in 24 hours to ensure the safety of electrical appliances and avoid excessive power consumption -Usb interface design: compatible with various devices, widely applicable to fish tanks, aquariums, and other scenarios requiring timed control, enhancing automation management -Easy adjustment: userfriendly interface with no complex settings, one-button operation to achieve timing, bringing convenience to busy lives -High efficiency: precisely control the working time of electrical appliances, effectively reducing energy waste, suitable for families and office environments pursuing a green lifestyle -Stable and sturdy: ensures longterm stable operation, reducing maintenance needs, suitable for various indoor environments requiring automated control Package list: 5 x timer switch