The Sensor XP 12 is the smartest vacuum cleaner on the planet. Never before has a vacuum been designed to fill so many vacuuming needs. The Sensor XP 12 vacuum combines versatility, performance, filtration, durability, and value into one unmatched machine. The Windsor Sensor XP 12 adjusts electronically to match the exact height requirement of any flooring surface the Windsor S12 does not. The Sensor XP 12 vacuum will notify the operator of adjustments and potential problems with a simple indicator on its message center. The Windsor Sensor XP 12 is often imitated, but never duplicated!