The PS-C50 is the latest combo system from Pro Series Pumps, featuring higher pumping capacity with the same great quality and reliability contractors have come to count on, the company says. The PS-C50 features the 1/2 HP S3050 primary sump pump (3,900 GPH at 10-ft. head), the 2400 backup sump pump system (2,400 GPH at 10-ft. head) backup pump can turn on and aid the primary pump in cases with high volumes of incoming water. The system also features two caged dual float switches to provide dependable activation for each pump and can run directly on AC power and battery power, automatically switching to battery power if AC power fails. The battery automatically recharges.