GLENTRONICS PS-C33 PRIMARY SUMP PUMP AND PHCC-2400 BACKUP SUMP PUMPThis continuous duty-rated primary and backup sump pump combination is pre-assembled for quick and easy installation. It includes dual float switches on primary and backup pumps, which automatically switch to battery power when AC power fails.^^What Does It Do?|Detects Irregularities, Sounds an Alarm, and Pinpoints Problems and Solutions on Control Panel||Alarm Can Be Silenced During a Power Outage|Automatically Maintains and Recharges Battery|Uses a Backup Pump to Assist Primary Pump If Excessive Water Enters Sump^^Primary Pump Information^The water-cooled primary pump uses an energy-efficient permanent split capacitor motor that is designed for use with maintenance or maintenance-free batteries. It can accommodate 2 B2200 batteries for 16 hours of continuous pumping! The primary pump also includes output terminals for connection to a security system or auto-dialer.^^Warranty Information^Included with this sump pump is a 3-year warranty. The warranty is good from the date of installation.