This item is provided by Crutchfield.com and includes free phone technical support for the life of the product. Details on how to take advantage of this service will be included with your package. Should you have any issues locating information on how to contact Crutchfield Technical Support, please contact this website's Customer Service department. This fan panel is designed for use with the Sanus CAPT01 low-voltage power supply . The thermostat kit that comes with the CAPT01 controls the fans, and activates them when necessary to keep your rack-mounted components cool. What's in the Box: 1. Rack-mount fan unit (rack height 1U) 2. 6' DC power wire with DC barrel plugs on each end 3. Instruction Manual