Summary

Double fluorescent tubes, 'old-fashioned'  compared with the latest LED technology but, actually, very effective, very powerful. 

Two-way light, shine the light from the panel underneath and use it as a 'torch' or use the light under the shade as a banknote-checker.

Read all about how UV light works; see lots of photographs of what you will see with UV light,

Technical

Wavelength: unknown, probably about 365mn

Lamp: two fluorescent tubes, very bright. 

Overall size 8 X 4 X 3 inches. 

Tube size 5 X 5/8 inches (130mm X 15mm)

Power: mains only.

More info, more pictures

To see photographs of what you see under the various UV lights