Features: 4 Gear Mechanical Timer with AC110V-220V Power Adapter Automate your aquarium lights, hydroponic systems, and household appliances using preset 3h/6h/12h/24h cycling mode for energy efficient device management. Features 4programmable intervals (3h ON/21h OFF to 24h continuous operate), manual override capability, and universally voltages compatibility (100W most load) without memory retention after power loss. Ideal for aquarium enthusiasts, indoor gardeners, and homeowners seeking automated control for fish tanks filters, sterilizers, holiday lighting, and ventilation fans. Perfectly schedules water circulation in aquariums, regulates grow lights for plant, manages router reboots, and controls seasonal decorations through its plug and play socket design. This durability plastic timer eliminates manual switching hassles while protecting sensitive electronics through precise daily cycling, making it essential for maintaining optimal device operate cycles. Specifications: Product Type: Ceiling Fan Lighting Timer Component: Plastic Cord Length: 13cm Size: About 8.2x4.3x2.5cmcm voltages: AC110-220V 50/60Hz Output Power: ≤100W Color:Black Time: 3h 6h 12h 24h 4gears Package Includes: 1pc Power Adapter T note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color