... video and 4CH Audio real time, D1 support DDNS, RJ 45, RS-485, remote control Alarm: 4ch IN/1CH out Support ... time Recording and displayRS-485 control support position settingRJ 45 port support DDNSSupport USB/mouse operationUSB file backup, With ... Input4 channelAudio Output1 channelAlarm Input4 channelRelay Output1 channelNet InterfaceRJ-45 (10M/100M)PTZ Control1 RS485USB Interface2x USB2.0Hard Disk2 ...