Temperature Monitor Modules

[cork-spotters]

What are the termperature monitor modules called that you see in a spare CD Drive Bay in some cases?
I've been searching around trying to find one, but when I don't know what they're called it's kind of hopeless .
Are they available on OCUK?

 

[sir-les-mp]

http://www.overclockers.co.uk/showproduct.php?prodid=BB-001-AK&groupid=701&catid=1428&subcat=1429
I think this is what your looking for os similar. i Have a Zalman MFC2 which also has temp sensors as well as monitoring the amount of power my system draws at the wall