APC Smart-UPS VT 15kVA 400V w/2 Batt Mod Exp to 4 - Start-Up 5X8 - Int Maint Bypass - Parallel Capable

Increases availability by allowing the UPS to be connected to two separate power sources.
Allows additional run time to be quickly added as needed.
Ensures clean, uninterrupted power to protected equipment while batteries are being replaced. Ensures clean, uninterrupted power to protected equipment when generator power is used. Supplies utility power to the connected loads in the event of a UPS overload condition or fault. Delivers higher availability through redundant batteries.