COMPLETE SUMP SYSTEM: include 12 amp battery charger, 12-volt 3180 gph backup pump, 115-volt 4020 gph automatic sump pump, diaphragm switch, pipe fittings and battery box (battery not included) PEACE OF MIND: if the primary pump should fail, or if there is a power outage, the backup pump will kick in preventing a flooded basement FEATURES: controller/charger monitors the battery condition and charges the battery as required; microprocessor control charing unit maintains a maximum battery charge BUILT-IN OVERCHARGE PROTECTION: prevents damage to the battery; test button manually runs backup pump to ensure functionality; audible alaring during 12-volt DC pump operation SPECS: 12VDC BACKUP PUMP: 6' leads: 15A; 180 Watts; max. 3180 gph; 23' shut-off; 3 Amps max input; 12 Amps max output; 115V PRIMARY PUMP: 10' cord: 6.5A; 750 Watts; max 4020 gph; 36' shut-off