Halogen bulb kit

28 W, G9

The energy class scale on energy labels for light sources has changed since September 1, 2021. You will no longer find energy class with "pluses" on our products, as the scale will now be at the lower end of the scale at the current state of technology. Our light sources are still keeping the same excellent energy efficiency, only the metrics have changed. To keep it simple, just stick to the fact, that the earlier the letter in the alphabet, the more energy efficient the product is.

The socket or thread is the connecting part of the light source with the luminary. There are many types of sockets, but the most commonly used are those with Edison thread E14 and E27, then the bayonet GU10 and pin socket GU5.3 (MR16). Small bulbs use a G9 or G4 socket for a change.

The operating bulb voltage at which the bulb shows the specified luminous flux parameter. Conventional light sources are either designed for 230V mains voltage or are low-voltage (e.g. 12V)

Power input is a physical quantity that expresses the amount of energy consumed by an appliance per time unit. The smaller the value, the more economical the product, but also less powerful.

The economical equivalent is simply to compare the consumption of a light source with a conventional tungsten filament bulb with the same luminous flux.

The service life of modern light sources is many times higher compared with tungsten filament light sources. The value expresses the number of hours that the light source is able to emit without appreciable loss of luminous flux.

Warm white, cold white, daytime white. This is a verbal indication of colour temperature (in professional terms, chromaticity temperature). Basically, it can be said that warm white has a light colour of yellow, cold white has a bright white light. Daylight white is already a slightly bluish light. The nomenclature may differ from brand to brand. For easy orientation, we mark our light sources with sun icons of the appropriate colour.