Which light bulbs - only LED or others as well?

But it works really well with our LEDs.

But unfortunately not with all lights. Own experience + note in Gira's installation instructions.

However, there was a neutral conductor in the flush-mounted box, which then made it work.

... which does not mean that it copes with the lower minimum load of LED.

... and that is my concern. The dimmer was installed in 2013, the dimmable LED bulbs are very expensive... Also, I need a very low watt/lumen output, since there are 5 of them. I had imagined it all a bit simpler... of course, I had already saved the lamps in the shopping cart before buying the lamp, but unfortunately only 60W/9W, and that is definitely too much, as I now realize :( I have already been googling back and forth on A**zon, the filter is just unreliable

The dimmer was installed in 2013,

Well, you can probably still see which model it is, and then find the corresponding datasheet.

Possibly the following is also possible. For example, Gira offers a compensation module LED for LED dimmers that are not inherently suitable.

[*]Allows the operation of dimmable HV LED lamps together with Gira Tronic dimmers or Gira universal dimmers.
[*]Prevents the glowing of HV LED lamps in the off state with Gira Tronic dimmers or Gira universal dimmers that operate in phase-cut mode and with switches with illumination element up to 3 mA.
[*]Improves the dimming behavior of HV LED lamps with Gira Tronic dimmers or Gira universal dimmers that operate in phase-cut mode.

Well, you can probably still see which model it is, and then find the corresponding datasheet.

Thanks, I'll take a look :)
If necessary, it will be replaced... the question is: what is more expensive, the new dimmer or the consumption of E-G light bulbs :D

I would be interested to know if dimmable LEDs have a shorter lifespan. I have the problem that many LEDs advertised as "eternally durable" fail on me because they are controlled by a timer switch. Is it the same with dimmers?

That's simply due to the inrush currents. In other words, an LED can last 50,000 hours if it is on all the time. With each on/off switching, the lifespan shortens. However, often it is not the LEDs but

I had imagined it all a bit simpler... of course, I had already saved the lamps in the shopping cart before buying them, but unfortunately only 60W/9W, and that is definitely too much, as I now realize :(

With LEDs, unfortunately, nothing is simple at all. Since LEDs have entered the "normal" lighting market, buying lamps has become much, much more difficult and expensive.

There's no help for it, you have to try. Just buy a preferred variant. It can work, but it doesn't have to.

Since the 5 light bulbs are connected in parallel to a dimmer, the power consumption is more than sufficient. For example, 5x5W LED = 25 watts total power consumption at full load. This should easily be enough for any dimmer from the post-war era.

Problematic are situations where a single light bulb is connected to a dimmer and the power consumption in the dimmed state then falls somewhere below 2...3W. In that case, the dimmer is no longer adequately supplied, but this is actually no longer a problem with reasonably current technology.