Back in the day, we had DirecTV and whenever the power came back on it took a couple of minutes for the receiver to reboot, and during a good storm in FL, the power would go off again before the boot cycle was completed. So in went a small UPS, 5 minute run time was more than enough. Next was a UPS for the Modem and Router for the same reason. This year, when I started playing with cameras, I was also cleaning up storage for the company I work for and found a UPS that I thought would work just fine for my setup...filtered output, isolation transformer, surge protection, 1,300 watt rated, about a 2 hour run time, and free!!!