Fan Speed/Temperature

I was looking at this fan controller from Home Depot and wondering if it would work and be ok with my fan. I have an Eco Plus 6" inline fan. Also if anyone owns one of them could you tell me how well they work. Any help will be greatly appreciated
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100028788&N=10000003+90401+500209

No one has any input

the attic fan one is best, but you will have to open the wire up to your fan.

Get "The Speedster" instead. I have the Eco Plus 6" as well and The Speedster let's me dial right in to a steady 76F. Probably the best bang for my buck yet. Highly recommended.

http://www.amazon.com/The-Speedster-Fan-Speed-Control/dp/B000HQAVNI

Thanks for the info i was considering the speedster also but i figured i'd see if this was any good first so i wouldnt have to drive as far.