<a href=showthread.php?s=&postid=10755850#post10755850 target=_blank>Originally posted</a> by saltykelly
I believe you are talking about a peltier cooler. I am looking into that right now, but finding it may be more work than it's worth.
IceProbes are Peltier coolers.
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/8633/cid/2170