Mechanical Countdown Timer Switch — precise, reliable control for pumps, lights and fans Key benefits - Precise timing: Set countdown from 1 minute up to 120 minutes, or choose continuous operation when you need an appliance to run without interruption. - Energy savings and safety: The timer automatically turns the connected device off when the set time elapses, reducing wasted power and lowering the risk of overheating or unattended operation. - Clear status visibility: Built-in power indicator shows when the timer is active and when the connected device is receiving power. - Broad compatibility: Designed for use with common electrical devices such as water pumps, lighting fixtures and fans; also well suited to aquarium equipment and other small powered appliances. - Simple, dependable operation: Mechanical countdown design provides straightforward, tactile control and consistent shutoff behavior without complex programming. How it solves problems - Eliminates guesswork: Replace manual on/off checks with a reliable countdown so devices run only as long as needed. - Protects equipment: Prevents overrun of pumps and fans, reducing wear and the chance of failures caused by continuous, unattended operation. - Reduces energy use: Automatically stopping lights and pumps after a set interval lowers electricity consumption and operating costs. - Improves convenience: Set it and forget it — the timer enforces schedules even when you are away. Features and function - Adjustable countdown range: 1–120 minutes plus a continuous-on option. - Automatic shutoff: Mechanical timer disengages power when the countdown finishes. - Power indicator: Built-in indicator lamp clearly shows the on/off status and whether a connected device is running. - General-purpose compatibility: Works with a variety of small electrical appliances (water pumps, lighting, fans, aquarium devices). Practical use scenarios - Aquarium maintenance: Run circulation pumps, dosing pumps or aquarium lights for a precise duration during cleaning, feeding or medication cycles. - Garden or irrigation: Control water pump run times for short watering cycles to avoid overwatering and reduce water waste. - Bathroom or utility fans and lights: Set exhaust fans or lights to run for a fixed time after use, improving ventilation and saving energy. User guidance - Suitable for plug-in use with common household devices; follow the device and local electrical safety guidelines when connecting. - Set the desired countdown, plug the appliance into the timer socket, and confirm the power indicator shows the unit and connected device are powered. - Choose continuous operation when timed control is not required. This mechanical countdown timer switch offers straightforward, reliable timing control for everyday electrical devices, helping you save energy, protect equipment and simplify routine tasks.