Low-voltage halogen lamps are more energy efficient than conventional incandescent lamps. They retain their brilliant light, power and colour throughout their life. Low-voltage halogen lamps are small and robust; they come in various sizes and wattages and can be capsule or available as reflector lamps, i.e. with metal or coolbeam reflectors. Directional luminaires have a glare-free Darklight reflector and, similar to downlights of the same design, are designed to be recess-mounted in ceilings.

Directed vertically, they produce light comparable to that of conventional downlights. The ability of the lamp and reflector to be tilted through up to 30° or even 40° from the vertical and be rotated through 360° is characteristic for directional luminaires. This allows the beam to be aimed at almost any area of the room, to provide the intended accent lighting. The Lightcast directional luminaires have cast aluminium housings designed to provide optimum thermal properties according to their particular technical requirements. The DALI-compatible luminaires have digital control gear through which each luminaire can be individually addressed - for instance using the ERCO Light System DALI with its integral ERCO Light Studio software.