APC (American Power Conversion)

APC UPS 1980 watts #SUA2200 (2 year, Mfr. warranty)$799.00

APC Smart-UPS, 1980 Watts 2200 VA,Input 120V Output 120V Interface Port DB-9 RS-232 USB SmartSlot
APC SYPM2KU Symmetra RM 2-6kVA Power Module (2kVA) (Refurbished, 90 day warranty)$550.00