I've had several brands over the years, from analog (the good old days), the 960H series and finally this hybrid (16 HD analog - 1080P; CVI and AHD + 16 IP (4K ) Channels ). Also, you'll need to do some research to understand all the terminology to get the device working the way you want it to (not just DVR/NVR, but good old computer stuff like internet security, etc.). Another note: Dahua (and rebranded devices from other companies) work 100% with this device. For other cameras, make sure it is ONVIF - works in most cases (there is a non-Dahua IP camera, can't use Dahua Smart PSS software for PC, but works well with hybrid cameras).
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