How do know they have failed? Will the controller give a very wrong reading or a fault? Or can it just be off by 5 -10 degrees, just enough to ruin a dinner? I am just not sure how I should make sure that they are always working.
I'm looking at the Mak 1, are the old probes replaced when the new probes come in?
Also I'm concerned about using the Mak 1 in the wintertime, is the hood double walled or have any insulation? Of course I'd like the Mak 2 but it is out of my price range right now.