822PS Sump Pump Backup System
822PS – Sump Pump Backup System. HOW IT WORKS: Pump Sentry will reliably power your sump pump during a power outage; it automatically switches to battery when AC power goes out & will automatically recharge when power is restored FEATURES: UL & CSA accredited, this 1200 Watt battery backup is compact; it’s designed to operate most sump pumps up to 9 amps & comes with indicators for power output, battery charge, & battery replace. Not for use with pedestal pumps.