The primary advantage to a UPS is that in cases of sudden power loss the UPS will continue to power the computer system long enough for you to save your work.
Additionally, in environments which have problems with "dirty power"... meaning the electrical supply may have sudden spikes or dips such as in an older building or neighborhood the UPS offers a great deal more protection than a standard surge suppressor would.
Capacity: 1200VA/600W
Input Voltage: 120VAC or 230VAC
Input Voltage Range: 85-145VAC or 170-280VAC
Output Voltage: 110/120VAC or 220/230/240VAC
Audible Alarm Backup Mode: Sounding every 10 seconds
Output Voltage Regulation: (Battery Mode) +/-10%
Output Frequency: 50Hz or 60Hz
Output Frequency Regulation: (Battery Mode) +/-1 Hz (Battery Mode)
Output Waveform: Modified Sine wave
Battery Type: Two 12V/7Ah
Battery Recharge Time: six hours to 90% after complete discharge
Transfer Time: Typical four to eight minutes
Indicator AC Mode: Green lighting
Indicator Battery Mode: Yellow flashing
Audible Alarm Low Battery: Sounding every second
Audible Alarm Overload: Sounding every 0.5 seconds
Audible Alarm Fault: Continuously sounding
Full Protection: Discharge, overcharge, and overload protection
Net Weight: 8.6kg
Operating Environment: 0 degrees C - 40 degrees C
Noise Level: Less than 40dB
Model: UPSA1200
Weight: 8600g
Dimension: 365mm (L) x 139mm (W) x 195mm (H)