UPS Backups, 450V and 550V; Orleans

APC Back UPS (uninterrupted power supply) ES 450 and 550

Both need battery replacement to provide uninterrupted power. Without batteries, they function as surge protectors.

APC Back-UPS ES 550VA UPS, 8-Outlets, Black (BE550G) | Staples

https://www.alldataresource.com/APC-BE450G-Back-UPS-ES-8-Outlet-450VA-120V-...