I have a Syndome ECO II, Power Rating: 2200 VA / 1320 W. I have a PC, 2 monitors, router, True Visions box, and TV connected to it. It will supply power for about 30 minutes when the power goes out. I comes with software that I installed on the PC to monitor the UPS and I set it to shutdown the PC after 15 minutes. I had to put in a new battery after 2 1/2 years, I got it at IT City for 7,900 baht. There are cheaper ones with a lower power rating.