This is the Triple Safe sump pump, which contains a 1/3 HP Zoeller pump, a ½ HP Zoeller pump, and one back up UltraSump within the basin. The sump discharge line is connected to an existing downspout extension, directing all water flow to a predetermined location by the homeowner. If there is a circuit trip, a power outage, or sump pump failure, the black box battery backup system will kick on, giving the homeowner peace of mind during major storms.