A low pressure mercury lamp Nk4/4 is assembled into bracket makes replacement easier.
The ends of wires are equipped with a connector for assembling into board:

It is suplied with no connected one pin which is assembled into connector after lamp installing.
Maximum of intensity radiation is at Hg spectral line 254nm. The total sum of other lines is less then 12%.
There is guaranteed operation life 2000 hours. Usually it work 4000 - 6000 hours.
For LCD 2071.2, 2071.3 and 2071.4