Switches and sockets

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

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

With a dimmable lighting fixture, you can control the intensity of the light. Usually this is with an external, NOT included dimmer. When in doubt, inquire.