This is description of this part:
The illuminator housing has a plug that allows you to mount the lamp in place of a mirror.
Power supply: 220V-240V
Bulb: 15W-25W
Halogen: YES - halogen bulb can be used
LED: YES - LED bulb can be used
Note: There is an ON/OFF switch on the cable
Here is some interesting information about light bulbs: https://baertierchen.de/wb_nov19.html
What is this part needed for?
- if you have a microscope with a mirror and want to replace it with an electric illuminator
- if you have a second-hand microscope that lacks lighting
- if you have such an illuminator and it is damaged