Tungsten halogen lamps operate on mains voltage and have similar characteristics to general service lamps, but offer, higher luminous efficacy and functional life. They are dimmed using conventional dimmers for incandescent lamps, due to the continuous spectrum the light emitted has an exceptional colour rendition quality. For this reason, luminaires for tungsten halogen lamps are particularly suitable for use in public or communication areas, especially if the warm white colour of incandescent lamps is required to contrast with areas with neutral or daylight-white fluorescent light.

In their basic form, downlights direct light downwards in narrow or wide beams and can especially be used to produce ambient lighting. Downlights installed in particularly glare-sensitive areas - for example, over conference tables - should be fitted with reflectors which provide exceptional glare control. Double-focus downlights produce a high luminous flux from a small ceiling aperture. The Lightcast downlights have cast aluminium housings which are designed to provide optimum thermal properties according to their respective technical requirements.