Proline 850VA Line Interactive UPS

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: 850VA/480W
Input Voltage: 230VAC
Input Voltage Range: 170-280VAC
Output Voltage: 220/230/240VAC
Output Voltage Regulation (Batt. Mode): +/-10%
Output Frequency: 50Hz or 60Hz
Output Frequency Regulation (Batt. Mode): +/-1 Hz
Output Waveform Modified Sine wave
Battery Type: 12V/9Ahx1
Battery Recharge Time: 6 hours to 90% after complete discharge
Transfer Time Typical: 2-6 ms typical, 10ms max.
Indicator AC Mode: Green LED lighting
Indicator Battery Mode: Green LED Flashing
Audible Alarm Backup Mode: Sounding every 10 seconds
Noise Level: Less than 40dB
Audible Alarm Low Battery: Sounding every 1second
Audible Alarm Overload: Sounding every 0.5 second
Audible Alarm Fault: Continuously sounding

Dimension(mm): 278(L) x 100(W) x 143(H)
Net Weight: 5.15kg

Package Content:

1x UPS unit

1x Male to Femail Cable

User manual with link to download the software

AC Power Cable is not included

Note:
A UPS is not designed to provide continuous power, merely a window period that allows a computer or other user to finalise the work at hand and shut down. It's ability to do this is dependent on the number of devices connected to the UPS. 
To establish what you can and cannot connect, calculate the total wattage you need to supply and ensure that the UPS you purchase meets that requirement.