Product Description The Basement Watchdog Special CONNECT battery backup sump pump system is an intermediate level backup sump pump with a built-in monitoring system, patented dual float switch, high capacity and energy efficient pump which automatically protects your basement when needed. From the Manufacturer The Basement Watchdog Special Battery Backup Sump Pump System pumps 2,500 GPH at 0 ft. of lift and 1,730 GPH at 10 ft. of lift. Pumping begins automatically during a power outage, when your main pump fails or when the water flow exceeds your main pump-Feets capacity. The backup pump-Feets monitoring system sounds an alarm when maintenance is needed or when a problem arises. A light on the display panel will indicate the cause of the alarm and the proper corrective action. Battery not included. See 30HDC140S for the battery.