There are so many features that set TripleSafe apart from other sump pumps. It has three sump pumps that fit all into one liner. This is important because three pumps won't become overwhelmed with higher pumping demands like a single pump system would. Also, if the power goes out in your home, the third pump serves as a battery-operated backup, meaning that it will take care of any business that needs to be handled until the power comes back on