Can Someone Recommend A Good Case Ambient Temp Thermometer?

I would like to get a thermometer for my case just to measure the entire inside ambient case temperature. I don't want it for specific temperature assessment such as cpu, video card, etc. Can someone recommend a good one on ebay.ca for me? I've never purchased one, and my place is going to get really hot again this summer so I'd like to know when my pc is too hot so I can shut it off.


http://computers.shop.ebay.ca/Computers-Networking__W0QQ_sacatZ58058



Thanks

 

Here ya go man, http://www.polderonline.com/product/125628.html Seriously , check some apps out here. http://majorgeeks.com/downloads7.html

 

No. None of those applications will work for me. I'm still using a Pentium 3 on an old Intel motherboard, they aren't capable of doing any of that. But I do need to check case ambient temp because I have 3 hdds, video card overclocked, $500 sound card, usb card, etc. & it gets really got where I am in the summer and I'm just trying to get ready for it now. I don't want my pc to burn itself away in the heat.

 

http://www.jab-tech.com/Akust-Thermometer-II-pr-3003.html

$10, looks like it is a fan controller as well.