I have a floor-standing 'mother and child' lamp which I rather like (doubles as a low-level ambient light and a full-on spot-light to help my failing eyesight to read comfortably. Looks similar to this one (no idea where mine came from):
Now, the upper lamp uses a linear incandescent R7S bulb (230W on a dimmer). This has just blown, so I thought I'd take the opportunity to swap in an LED replacement
I've dismantled the switch unit and examined the dimmer switch inside - it's this model (Hopestar LD-901):
Any thoughts welcome!