Pentair Kreepy Krauly® Prowler® 820 Motor is for the the computer-controlled, programmed cleaner that scrubs and vacuums the pool's bottom, walls and steps and provides supplemental filtration of pool water. Totally self-contained and independent of the pool circulation system, Prowler provides on-demand cleaning without running pumps. It requires no installation, no booster pump and no hoses. Just plug it in and place it in the pool.