A:Answer No monthly charge is required to use the cameras or Lorex app. Power is provided through the Ethernet cables. These are wired cameras therefore when watching from the included dvr, there is no delay. Watching through your phone may cause a slight delay depending on your internet connection speed. I’ve had mine a few months now and like them a lot. Note that when recording in 4K with 6 cameras, it uses the dvr space quickly. Can’t store more than 2-3 days. Turning the quality down will allow more storage. Hope this helps.