The ultra-quiet fan system is designed to cool home theaters, entertainment centers, and audio video cabinets. Included fans use a custom motor engineered to minimize noise during speed variations and are certified by CE and RoHS. Contains AC Infinity axial fans ACX-FD1225(B)05W5 which meet UL-507 standards for safety under Underwriters Laboratories certificate E503903. Containing dual ball bearings rated at 67,000 hours, the unit can be mounted in any direction. Features a CNC machined aluminum frame with a modern brushed black finish. Fans are set to exhaust air out the frame but this can be reversed to intake air using a screw driver. Includes all necessary hardware to easily mount the unit onto a cabinet and power it through a standard wall outlet.The controller features an on-board processor with active temperature monitoring as well as intelligent programming that will automatically adjust fan speeds to respond to varying temperatures. Additional features includes an alarm system, display lock or off while programs are running, six fan speeds, three back-light settings, two buffer options, and power failure memory. Features a detachable 6-foot precision thermal probe that is water resistant.