The Velleman WSAH187 LED dimmer is designed to provide 12-24VDC and 5A of current for LED lighting applications. It features a robust and durable construction, allowing it to resist shock and vibration, as well as extreme temperature variations. The LED dimmer is capable of dimming lights from 0 to 100%, in both clockwise and counterclockwise directions. The device also includes several safety features, such as short-circuit protection, over-temperature protection, and surge protection, ensuring a long-lasting and safe operation. The dimmer is compatible with most LED light bulbs, making it an ideal choice for a wide range of lighting applications.