Used Mecer 1000VA 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 150W: 25 minutes
50% Load 300W: 7 minutes 30 seconds
75% Load 450W: 1 minute
100% Load 600W: 30 seconds

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.

Technical Specifications

Input
Capacity: 1000VA/600W
Voltage: 220/230/240 VAC
Voltage Range: 162-290 VAC

Output
AC Voltage Regulation (Batt. Mode): +/- 10%
Frequency Range (Batt. Mode): 50Hz or 60Hz +/- 1 Hz
Transfer Time: Typical 2-6 ms
Waveform (Batt. Mode): Simulated Sine Wave

Battery
Battery Type & Number: 12 V/7 Ah x 2
Typical Recharge Time: 4-6hours recover to 90% capacity

Alarm
Battery Mode: Sounding every 10 seconds
Low Battery: Sounding every second
Overload: Sounding every 0.5 second
Fault: Continuously sounding

Physical
Dimension D x W x H (mm): 350 x 146 x 160
Net Weight (kgs): 8

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

Interface
USB Port: Windows 2000/2003/XP/Vista/2008/7/8/10, Linux, Unix and MAC

What's in the box
1 x UPS Unit
2 x MALE TO FEMALE EXTENSION POWER CORD IEC C13-C14 (From UPS to PC)
2 x MALE TO FEMALE EXTENSION POWER CORD IEC C13-C14 (From UPS to PC)
1 x Driver Disk