Cant recommend this programmable fan controller enough. You can set your own start/stop temperature. Current temp is displayed on its screen. Glad to have the option to turn that off the screen is bright and I dont need to know the temp every second of the day. ;-) The long probe is nice because you can get to place the sensor where the most heat is generated. I chose this controller over another companys because it simply turns the fans on and off based on temperature. The other one can step the fan speed up and down too. However, I heard the fans winding up/down to adjust to the new speed. I also like that if my cat destroys the sensor wire, I can easily replace it.
This isn't my first purchase from CoolerGuys. I really love their internal thermal fan controller. I bought 2 of those. I go there for things that are a bit harder to find. If they had a bit lower prices, I might buy more from them. They are very good though. I will shop at CoolerGuys again.