Ultra-compact standby UPS with built-in DB9 serial monitoring port protects PCs, network workstations, and other systems reliant upon a simple serial communications interface for UPS monitoring and unattended system shutdown. Maintains AC output during blackouts and brownouts starting at 99 V. Includes DB9 monitoring port with cabling, TEL/DSL line surge suppression, surge-only outlets, and LED indicators. PowerAlert software available free via download.