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. Having a problem keeping your high-performance audio/video gear cool? The ATM System 2 kit features two fans you can install in your mid-sized cabinet to address the problem. The fans are controlled by a remotely mounted temparture sensor. When your gear gets warm, the sensor activates the fans. If the temperature continues to rise, the sensor increases the fan speeds. The fans operate with quiet efficiency. They're ideal for mounting in the back of your cabinet to draw warm air out. All connecting wires have plugs - no soldering necessary. And the system comes with its own AC adapter for a power source. What's in the Box: 1. 2 Fans (each with attached 5' power harness) 2. 2 Fan grilles 3. Fan controller module 4. AC Power supply with 6' cable (9VDC/1.3A output) 5. Thermal probe (attached 43" harness) 6. Thermal probe mount with adhesive backing 7. One 4" wire-tie 8. Installation instructions