The lamps are not all the same.

Depending on the operating technology they create a light source that has different characteristics:

• The LED's acronym for Light Emitting Diode . The device uses the optical properties of some semiconductor materials to produce light, but they are highly efficient, but create a very white and intense light.

• Incandescent lamps with the Joule effect make a tungsten filament glowing. Light produced is of good quality but much energy is needed to produce the same amount of light produced by other light sources.

• Halogen lamps work on the same principle as incandescent but are filled with a gas that protects the filament from consumption and it runs for longer, and also have a greater light output.

• Neon lamps, including those compact low-energy lamps, are filled with a gas that is triggered and becomes fluorescent and thus creates light. These lamps have great energy efficiency at the expense of the quality of the chromatic rendering.