http://www.reptilebasics.com/rbi-201.html
It came in a nice packaging... in a plastic retail case surrounded by balled up newspaper. It worked right out of the box, and showed me that my queen elizabeth's hot side was at about 90, and the cool side was at about 79
As a side note: I was holding Queen Elizabeth because she pooped today so I was cleaning her tank... and the box that the temp pen came in was sitting near me and she slithered off of me and into the box!!! She looked so nestled and cute... so i cut a hole in the side of it and cut off the four flaps on the top and put it in her tank after cleaning it on top of her hot side's hide... she has been crawling in it and out of it and ontop of it since... she seems very excited to have it in her tank... just thoght id share