How do you attach a temperature regulator to a kiln?

I am thinking of buying a temp regulator (Efco 50191) to my Uhlig U15 kiln as it has been sat in my workshop and I've never used it. I am a complete beginner so please excuse my "stupid" question! I know the temp regulator has a plug for an electrical socket (obviously) but don't know how you attach it to the kiln. Can you explain please? Thanks for any guidance as I would like to understand this before buying the regulator even though I know it will obviously come with instructions, just because there doesn't seem to be any appropriate place on the kiln for an attachment.