the original temp probe that is linked above has been replaced with this
http://www.sharkacomputers.com/thfltxpl.html . Although the temp range is the same and the display appears the same they have made changes to the probe and fitting that no longer make this a good choice for our application. also power source is external 12VDC. I am checking availability of old stock from the original one as well as a couple others I recently found with built in power supply.