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https://www.lorextechnology.com/hd-ip-camera/2k-hd-ip-security-camera-with-motorized-varifocal-lens/LNB3373SB-1-p https://www.aliexpress.com/item/Dahu...3-e6a4aa85039f https://www.aliexpress.com/item/Dahu...3-e6a4aa85039f if they are is there any reason the Dahua will not work on this NVR ...

I am new when it comes to security cameras. I ordered a NVR and a few ip 2mp with poe cameras form Lorex. Needless to say none of the cameas I ordered would work as they should. So I called tech support only to find out they are not ''compatable''. So my question is how do you know what to...