IR means Infra-Red Camera and the property responsible for night photography and IR Distance means the longitudinal distance to the camera to appreciate its clear perception at night .. Or in the absence of lighting .
The PTZ
The least amount of light the camera needs : MINIMUM ILLUMINATION
The highest temperature the camera can withstand : OPERATION TEMPERATURE
The lens and the dimensions through which you shoot: LENS
signal to noise ratio: S/N RATIO
Recording modules for surveillance cameras
First: Digital Video Recorder or DVR
It is a video recording device for surveillance cameras, and there are two types of it : the first type, which is called