The Cool-it II is a single unit equipment cooler that is placed on top of equipment that is running hotter than it should be. Two almost totally silent 4.7" (120mm) fans send a stream of air down into the equipment to remove excess heat and prevent damage due to overheating. When the thermal switch closes, Cool-it II sends a quiet stream of cool air down into the component.
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This is a great product. quiet and easy to install. JCBy: James Crowhurst 2017-08-09