Check the listing for details. Middle Atlantic UQFP-4D, Ultra Quiet Four-Fan Panel with Display. Condition: Open box. Listed at 425.00 USD. The UQFP-4D Ultra Quiet Four-Fan Panel with Display from Middle Atlantic is a high-performance 2U fan designed to promote optimum airflow in your cabinet, thereby lowering the operating temperature of your equipment and extending its life. It has been designed for use in boardrooms, classrooms, offices, and other areas where quiet operation is essential.A thermostat control will vary fan speed based on the temperature in your rack or enclosure, a feature that ensures a constant operating temperature regardless of changes to ambient temperature. Temperature is monitored via an onboard digital processor and an included temperature probe.An over-temperature notification is another powerful management tool that will alert you locally or remotely through use of an external alarm device. Local status and alert messages are communicated through LED lights on the unit's front panel. This model includes a digital display in the middle of the fan panel that provides temperature readings in 1° increments in either Fahrenheit or Celsius. Lower Temperature & Extend Equipment LifeUsing a fan in your rack to lower its temperature can extend the useful life of your equipment.Quiet OperationThis unit has been designed for use in boardrooms, classrooms, offices, and other areas where quiet operation is essential.Automatic Temperature ControlFan speed is adjusted automatically to maintain a constant temperature through use of the unit's onboard digital processor and a temperature probe.Over-Temperature AlertAn over-temperature notification will alert you locally or remotely through use of an external alarm device.LED LightsLocal status and alert messages are communicated through LED lights on the unit's front panel.Temperature DisplayThis model includes a digital display on the fan panel that provides temperature readings in 1° increments in either Fahrenheit or Celsius.