Illuminated tactile switch

Hi all,

I'm designing a product and would like to use these switches

I can get them from Jaycar (in Aus) but don't like using a component that can only be sourced in one place.

Trouble is I don't know who makes them. Underneath there is a tiny manufacturer's mark, either

I-L or HL with the H and the L joined together.

Anybody know what they are and where they come from?

Rob