Replacing bathroom pull switch L1-L4 + Earth

[Jeimuzu88]

I'm looking to relace a bathroom pull switch that currently powers a ceiling light and extractor fan. Not entirely what type of pull switch it is, as it seems to have L1-L4 + earth:

Can anyone advise as to what type of switch this is, and/or which is best for the above solution?

Thanks.

 

[Sureitsoff?]

looks like a double pole switch ie for showers rather than lights etc . I think it actually says DP IN on the base at the top of the pic it could be that two seperate lives are feeding the top two terminals and are being switched to the bottom two so the black cables are switched lives and should really have red sleeves on them