Network Video Recorder is an equipment for recording, monitoring, event management, and playback of a network-based IP camera or server. 

Noise Reduction removes noise generated by AGC in a low-light environment. 

Motorized Focus and Zoom Lens is a lens with automatic focus and zoom functions, and can be controlled through the PTZ menu in software. 

Minimum object distance is the minimum focal length that can focus on the subject of the lens.