1.CCTV Digital Video Camera Server 2. Hidden Camera 3. IP ... to carry3.Alloyed shell,much harder4.Support sound control video recording5.Support PC camera and chatting function6.Support USB ... 2000/Me/XP/Vista Feature:Support 1 channel video signals, D1 resolution,can define the compression stream of ... video image,USB,SD(optical),RS485 port &1 RS232 ...