Surface

Defines more the device. For example you can have a surface-mounted wall-mounted appliance in up- and downlighter at the same time. The type then becomes 'Up- and downlighter'.

The space where you can apply the device.

This is the colour of which the device is mainly composed.

The type of light indicates the effect of the light source.

Indicates the light colour of a light source. It is expressed in Kelvin. The higher the value the whiter the light. The lower the value, the yellower the light.

The total amount of visible light emitted by a light source.