What does the NVR do if a 10 second power outage happens,I remember it was very hard on HD when it was turn back on before heads park?
Is there an easy way to turn off cameras at any time,don't need to record me mowing the grass. Could a switch be put between the poe camera and the NVR to turn off camera?
There must be times when people don't want the NVR on,there should be a fast simple way to do this.
NVR Questions
Re: NVR Questions
The easiest/cheapest way that I can think of would be to use an additional cable and an ethernet coupler then just unplug the cable but having said that, to my mind it defeats the purpose of having security cameras in the first place. It won't be long before you forget to re-enable the camera and that will be just the time when it's needed to do it's job 
My AMCREST Cameras:-
2 x IP3M-941B firmware V2.620.00AC00.3.R, Build Date: 2019-12-18
1 x IP2M-841B firmware V2.420.AC00.18.R, Build Date: 2019-08-03
2 x IP3M-941B firmware V2.620.00AC00.3.R, Build Date: 2019-12-18
1 x IP2M-841B firmware V2.420.AC00.18.R, Build Date: 2019-08-03