Seller contacted, he replied in 24 hours and it takes 6 to 10d working to send us an adapter In => Fr
so if you are in a hurry, go to DIY / LM / casto it fast ...
4 stars for the inconvenience, but the seller responds well.
Regarding the Lamp: I thought it would be bigger, it's about 15cm wide (a CD-ROM) for the blue bar, but otherwise looks pretty fun. I tested tonight, now that the adapter has been received ...