DPDVR04D-304 Digital Video Recorder is a multimedia digital monitoring system for the building designed and developed a series of dedicated embedded digital hard disk recorders. Mainly used in image and voice the need for lengthy video, audio, remote monitoring and control applications. It uses an integrated design, the single-board integrated video and audio capture, compression, storage, network transmission, multiple PTZ control, alarm detection and other functions, to ensure the system's high integration and high reliability. It offers a variety of network interfaces, use the TCP / IP and other protocols, can achieve the same local area network, wide area network connection, wherever the user can connect through the network to realize the area being monitored and video surveillance. System is simple, and wide application.