With LED light useless!

The adulation I skip. There are plenty of reviews, among other things, Stiftung Warentest, awarded on this bike computer top marks. I will not deny it. If it works, then it is really fun. But the fact is now times, and nobody know it in advance out that this radio speedometer does not work when an LED light on the handlebars lights. The LED technology interferes with the radio signal, the speedometer shows no value. What shoud that? Why will not you say a buying?

There is a solution, zugegegben, you can buy simply by the same manufacturer an expensive LED lamp that works with the tachometer (eg Sigma Pava). I did it because there is no comparing radio speedometer on the market and probably no LED lamp that harmonizes with this radio speedometer, unfortunately.

The problem has been known for several years, other manufacturers such as VDO have found a solution. Why not SIGMA? Infected since about calculus behind it? If we would like to operate cross-selling / sales of other products (especially the expensive LED bulbs here) boost? The suspicion is obvious. Otherwise I can (do nothing of this) / silence of SIGMA not explain this behavior.