The EP 1100 is a Line-Interactive uninterruptible power supply (UPS) with a medium output capacity of 1100W. The EP provides filtered and regulated AC output power of proper voltage to operate traffic signals, conflict monitors, camera equipment, lighting, and additional applications used in Departments of Transportation and Intelligent Traffic Systems (ITS/Traffic). Built-in intelligence provides continuous operation during brownout and voltage spike with Automatic Voltage Regulation. A heavy-duty battery charger and robust inverter provide backup power and recharging when line voltage is present. Status monitoring capabilities are provided through the LCD, serial interface, and optional Ethernet network card for remote monitoring.