Used Mecer 2000VA Line Interactive UPS

Key Features:
Microprocessor control guarantees high reliability
Boost and buck AVR for voltage stabilization
Auto restart while AC is recovering
Simulated sine wave
Off-mode charging
Cold start function
USB communication port and RJ-11/RJ-45 protection
Overload, discharge, and overcharge protection
Supports Windows 2000/2003/XP/Vista/2008, Windows 7/8, Linux, Unix, and MAC

Back Time (Minutes)
25% Load 300W: 15 minutes
50% Load 600W: 5 minutes
75% Load 900W: 2 minute
100% Load 1200W: 1 minute

Note:
Data given are the average values, not the minimum values.
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.

Specifications:

Capacity: 2000VA / 1200 W
Waveform (Batt. Mode): Simulated Sine Wave
Battery Type & Number: 12 V/7 AH x 2
Typical Recharge Time: 4-6 hours recover to 90% capacity

Protection
Full Protection: Overload, discharge and overcharge protection

Physical Dimensions D X W X H (mm): 397 x 146 x 205

Net Weight (kgs): 11.5

Operating Environment

Humidity: 0-90 % RH @ 0 - 40 C (non-condensing)
Noise Level: Less than 40dB

What's in the box
2 x Mate to Female Extension Cables
2 x Mate to Female Extension Cables
1 x User Manual Disk
1 x User Manual
1 x User Manual