This true on-line, double-conversion, uninterruptible power supply (UPS) provides computer grade power quality at a price below comparable kVA models. This UPS has a small footprint, low weight, standard battery run-time of over nine minutes (with optional batteries for extended run times), blackout protection, and power conditioning. Front-end harmonic correction eliminates the need for additional filtering, lowering the cost of operation. Robust double-conversion technology protects the connected load from sags, swells, harmonics, noise, and voltage imbalances without going to battery operation. A user-friendly control panel is located on the front of the unit and includes an alarm and remote monitoring through an RS232 connection.