Halogen lamps are constructed with a coiled tungsten wire filament, a quartz capsule and a halogen gas fill at below atmospheric pressure. These quartz capsules are manufactured in great variety of shapes and sizes and marketed as single products (see bipin) or as components of other lamp products (see double envelope). Halogen lamps have been extensively employed in residential, commercial, entertainment and display applications. A principal advantage of halogen lamp types is the clear, crisp white light that is produced at approximately 3200 Kelvin which represents a significant delta from the standard incandescent lamp which produces light at a far more yellow 2700 Kelvin. The adaptability of halogen for applications in both high and low wattage as well as high and low voltage creates an extremely broad array of products. This means that the greatest difficulty with halogen lamps is often proper identification. The problem can be alleviated if the wattage, operating voltage and the base or pin connection type is known. Please consult with your Kelsun sales representative should you require additional assistance.