Line-interactive operation (Automatic Voltage Regulation) adjusts a wide range of incoming voltages to 120 VAC nominal, preserving battery runtime for use during blackouts. Up to 4 communication ports (2 USB + 2 DB9) and FREE PowerAlert Software provide automatic, unattended system shutdown and power network monitoring and management. Select models include an SNWP/Web accessory slot. All models feature built-in surge and line noise protection. “XL” suffix in Mfr"s. Type column indicates extended runtime capability with optional external battery packs, available separately.
