Bests & Worsts Reviews from Amazon

Bought 5 of these for my home security system. Terrific camera. POE operation is very straightforward. I am recording them on my Amcrest 8 channel NVR and have an 8 port Amcrest POE switch in my attic. You can use these cameras without the NVR but need to set them up that way if you want to. The 4K (8MP) resolution is incredible. Daytime color is amazing and the night vision works great as well. Glad I made this investment in high end cameras. I can see where it is easy to go cheap and then find out you have a blurry image once you zoom in. Not so with these. Can't recommend them enough. Only downside I have found is the documentation/manuals/software apps are a little different from one to the other. So expect to spend a little time with them. Update 10/11/18: I have had these 4 cameras in operation for several months now. 4 cameras, an Amcrest POE switch in my attic and an 8 channel NVR in my "IT closet". The cameras provide e-mail alerts as well as Amcrest App notifications on my iPhone. So I typically look at the picture in the e-mail alert and check to see who it is. If it isn't who I was expecting I use the Amcrest App for remote playback of the video that triggered the event. It has worked extremely well. I caught Amazon contractors dumping packages on the bench in my driveway instead of at the front porch. I hammered Amazon and now all is well. No more packages on the bench. I found out also that the cameras have settings for motion and can e-mail alerts directly from the camera. So if the NVR goes down for whatever reason each camera will send it's own alerts. It's a great feature since these cameras can operate stand alone or with an NVR. I did not install the memory card in the camera, but you can have even more redundancy if you choose to by doing so. I have had to tweak the settings in the NVR to get the sensitivity to motion setup as well as adjust the sensing area. I've had spiders create webs over the front of the camera and birds fly into the lens. This will be the case regardless of whose cameras you buy. So expect to do some work to tweak the operation and you will be very satisfied. I record continuously to a 6 TB drive in the NVR at full 8 MP resolution at 15 frames per second. I have 12 days of storage on tap and that is plenty for me. Be sure to backup your NVR config file to a USB drive on the NVR. Also you can backup each camera config by connecting directly to the camera. It's a 10 second job that will pay dividends in case you have issues.