Conventional light bulbs produce a lot of invisible infrared radiation in the form of heat. Only 20% of the energy consumed is emitted as visible light. If you have not already done so, it is high time to replace inefficient bulbs with modern, economical models, as LED technology is now so advanced that it no longer compromises functionality.

LED bulbs

To give your existing lights an energy-saving retrofit, select the right LED bulbs from our product range. Replacing your bulbs will pay off in next to no time — especially for lights that are left on throughout the day, such as those in offices, workshops or other public spaces. Use the options available in the shop to quickly locate your desired product.

Socket types

When replacing a bulb, you must first check the socket type so that you can find the right replacement LED. While E14 and E27 sockets are still the most common, GU10 sockets are also found, especially in spotlights, and B15d and B22d sockets are used very widely in indicator lamps in the automation sector.

Colour temperature of the light

At first, it may appear odd that the colour of light is expressed as ""colour temperature"", measured in kelvin. However, experience shows that the colour of a body does have a lot to do with its temperature: If you heat a piece of iron, it will first glow red, then as the temperature increases it will glow yellow, and then almost white at a very high temperature. This effect is the basis for determining colour temperature. The rough colour scale can be seen in the CIE colour system, and the following colour temperatures are used in practice:

What is brighter: lumen or watt?

Of course, the brightness of a bulb depends on its ""lumen"" value — the quantity of light that a bulb radiates. Lumens are a measure of the total quantity of light, regardless of the direction in which it is radiated. By contrast, the number of watts is simply a measure of the electrical power that is consumed. The more efficient a bulb, the fewer watts are required to generate the light. In comparison with lumens, watts are therefore of secondary importance.