EGT readout help needed.

Hi, hopefully someone here has the same digital EGT readout as I. It's fitted and working fine, I have wired it up to an LED warning light to come on at a set temperature but have lost the instructions on how to set the thing, it was bought from a guy calling himself corey000017 or something similar on Fleabay for around $100, hopefully the pictures will come out OK, I just need to know how to set the temp to alarm, I have emailed the seller to no avail and I think he may have stopped trading!

pic here

and here

Cheers, Kanga.