In article _ESLe.180600$HI.42655@edtnps84, Justice wrote:
Hi all what I want is a device that will turn on a fan when the temp
gets too hot and shuts down when it reaches another temp.
Thank you

my car has one of them in the radiator

Seriously though pre-set thermostats are avaialble in a range of
temperatures... and for a little more $$$ adjustable ones are
available too.

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Bye.
Jasen