The PC237-441 from Liberty Pumps is a Sump Pump Combo (1/3HP Sump Pump & 12V Battery Sump Pump) Back-up System, 115V. 

Features:

• Fully assembled and automatic operation
• Ready to connect to 1-1/2" discharge
• Provides uninterrupted pumping in the event of power outage or main pump failure
• Compact profile will fit minimum 15" diameter sump pits
• Audible and visual alarm warns of backup pump operation
• System includes primary pump check valve and back-up pump check valve.
   

Technical Specifications:

• Horsepower: 1/3 HP
• Oparation Type: Automatic
• Maximum Flow: 37 GPM @ 5' head (Primary Pump)
• Maximum Head: 21 ft (Primary Pump)
• Discharge: 1-1/2" FNPT (Primary Pump)
• Solids Handling: 3/8"
• Maximum Fluid Temperature: 140°F
• Construction: Polypropylene, Powder Coated Aluminum
• Frequency of Revolutions: 3450 RPM
• Voltage: 115V (Primary Pump), 12VDC (Back-up Pump)
• Amperage: 5.2 A (Backup Pump), 900 mA (Back-up Pump)
• Frequency: 60 Hz.
   

Warranty: 

• 3 years manufacturer's warranty