Wall-mounted downlights are defined first and foremost by their type of mounting and not by their light characteristics. Different light distributions are possible such as narrow-beamed, wide-beamed, symmetrical or asymmetrical in various directions.

Criteria for wall-mounted downlights
- choice of lamp determines light colour, functional life, efficiency, light intensity
- emission angle determines the beam of light and is defined by the reflector
- cut-off angle limits glare and increases visual comfort
- light output ratio is increased by optimised reflector technology