Question 1

Can an RGB bulb be used as the main light source?

Accepted Answer

It can, provided it offers enough lumens in white mode and has a true white or adjustable-white mode. If it only mixes red, green and blue, the white light may appear less natural.

Question 2

What is the difference between RGB and RGBW?

Accepted Answer

RGB combines red, green and blue to create colours. RGBW adds an independent white channel, improving the quality of white light.

Question 3

Can I use an RGB bulb with a wall dimmer?

Accepted Answer

Generally, no. Brightness is normally adjusted from the remote control, app or the bulb’s internal system. An external dimmer may cause problems unless compatibility is explicitly stated.

Question 4

Which RGB bulb bases are most common?

Accepted Answer

The most common are E27, E14 and GU10. E27 is used in standard lamps, E14 in compact light fittings and GU10 in recessed or adjustable spotlights.

Question 5

Do RGB bulbs remember the last colour?

Accepted Answer

It depends on the model. Some retain the last setting used, while others return to a default mode when switched on.

Question 6

Do RGB bulbs use more energy?

Accepted Answer

Not necessarily. Energy consumption depends on the wattage and selected brightness level. In colour mode or at reduced brightness, they may consume less than when operating at 100% in white mode.

Question 7

Can several RGB bulbs be controlled together?

Accepted Answer

Yes. Many systems allow groups to be created so that the colour, brightness or scenes of several bulbs can be changed at the same time.

Question 8

Are RGB bulbs suitable for outdoor use?

Accepted Answer

Only if both the bulb and light fitting have suitable protection for outdoor use. The IP rating of the complete installation should be checked and the connections protected against moisture and rain.

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