Camera Server converts analog camera to IP Camera with Audio support. The camera server has an SD card slot which allows you to record images directly from the camera to an SD Memory Card (sold separately) in the server without going through the network. Motion Detection Function and Image Transfer Mode allows you to check a site only when something moves, such as when a person enters or leaves the area under surveillance. When the camera detects movement, it shoots a still image, holds the image temporarily in internal memory, and sends you a copy by email2 or FTP transfer.