The electromechanical timer switch is a practical device designed for controlling lighting systems, particularly in aquariums. With a maximum power of 3500 watts, it allows for easy programming of recurring daily cycles, ensuring efficient use of light sources. The timer is user-friendly, making it easy for even those with less technical expertise to manage their lighting. It has compact dimensions of 11.5 cm in length, 8 cm in width, and 23 cm in height, making it a space-saving solution for various applications. It is suitable not only for aquariums but can also be used in other areas where timed lighting is required. The timer is compatible with various light sources and provides a reliable way to optimize energy consumption and extend the lifespan of the lighting.