2 way 2 gang dimmer switch

[DrewSmith]

I am a little confused, I had a two switch dimmer which was faulty.these were the only switches for two lights in my lounge.
I bought a new 2 way 2 gang dimmer unit to replace it.
There are two blue and one brown wire and each block on the switch has L1 L2 C terminals.

Have I bought the right unit and if so what terminals do I use

 

[paul b b]

Hi drew. do you by any chance habe a photo of it?
Is the loop in the switch or in the fitting?