I am going to get a UPS for a remote NVR that I have setup that has 3 cameras and a POE switch. The NVR is a small 8 channel LTS with built in POE but not using the POE switch side. Ive used normal non sine wave ups systems in the past but do you think these newer nvrs require a sine wave ups? I know the purpose of the sine wave is to be more compatible with pc/mac that use the active pfc or whatever its called on the newer power supplies.