Robotic pool cleaners are powered by low-voltage electricity, rather than your pool pump or a booster pump. Robotic pool cleaners have a built-in filter which reduces the use of your pool's primary filtration system, increasing the amount of time between pool filter cleanings.
Robotic pool cleaners are also convenient - just plug it in and place it in your pool. Some models even have remote controls so you can steer the unit from a lounge chair for easy spot cleaning!