Preprogrammed, wired, and fully tested, the KE2 fan control incorporates variable-frequency drive technology to provide fan load matching, eliminating wasted horsepower and providing a rapid and continuing payback on both upfront and payback costs. It is a condenser control that provides energy savings over 50 percent compared to traditional, mechanically controlled systems, the company claims. The proprietary algorithm of the fan control matches system conditions with equipment operation. It can be used in a wide variety of applications, including multifan condensers (split, nonsplit), cooling towers, and ventilation fans. The control packages are available for a wide range of horsepower ratings, and are built to UL 508 specifications. The pre-wired controller reduces installation time and errors associated with field installation.