What do I need to know?
We have 4 of them (see pic), fitted 10ish years ago. They had halogen bulbs in them that caused the blackening of the wall above them, as seen (cleaned up!).
We now have LED bulbs in them, which don't appear to have this problem.
We're going to replace the fittings, and need them to be dimmable, as they are now.
What's the latest technology? What do we need to consider?
Thanks.