The Varilight Standard Series Dimmers features a robust UK design and build quality for long lasting performance. It has a proven technology from the UK’s leading dimmer manufacturer. Constructed of top quality branded power components for reliability and long life and is suitable for a wide range of loads. V-Dim Rotary dimmers can be used for mains incandescent GLS lamps (standard mains light bulbs), up to the maximum load as specified on the dimmer. They can also dim GU10 or similar Hi Spot Mains Halogen lamps (only use quality UK supplied lamps) up to the maximum load as specified on dimmer. Wattage: 1 x 400W Finish: Matt Chrome