Found some very interesting inexpensive temp controls

I don't know if these can be adapted in any way for other brewing purposes, but here are two temperature controllers that I found quite interesting; they are used for controlling cooling fans in computers, including changing the speed of the fans. I found them while searching for something I could use for my conical cooler; perhaps similar items can be found via google:

-- this one has 4 temperature probes with a range of 0°C - 90°C ±3% (32°F - 194°F ±3%), and while the current model has default temps that can't be changed, the newer model which has not yet been released will be programmable, according to their FAQ page. Price of the current model is less than forty dollars, plus tax and shipping.

Here is another brand --

-- and this site gives a lot of detail of everything that is included in the kit, which seems like a LOT. This one is actually a little cheaper, selling for just $34.50 plus tax and shipping.

I'd appreciate any comments, and particularly any thoughts about how this could be used in my cooler, which uses fans to transfer cold air from an ice compartment into the upper fermentation compartment. These have multiple thermal sensors which are for controlling different fans (which means different devices), and this is giving me some ideas. To begin with, I think it might be possible to shrink wrap and seal one of them for use inside my conical -- right down in the middle of the wort

-- although I'm not entirely sure of how I would use the data (maybe that would be the primary sensor for determining whether to run the fan); a second sensor could measure the air temp in the fermentation compartment (against the surface of the conical), and also turn on the fan; a third sensor could monitor the temp in the ice compartment, and instead of turning on a fan, it could sound an alarm to signify that the temp has gotten too hot (meaning ice needs replacement); and a fourth sensor could be a fail-safe to turn on a heater if the temp inside the fermentation compartment drops to below 32F/1C, since I'd like to possibly put my cooler in my breezeway in the winter to more easily chill everything. I'd really like some feedback on this from anyone with some technical savvy (and I know there are a lot of you here). Thanks.

Thanks for any feed back.

Cheers and good brewing.

Bill Velek