Pacidal ccHDtv DVRs, designed for viewing, recording, and analyzing security videos in a ccHDtv surveillance system, feature solid ability to process multiple channels of 1080p video streams, with remote access supported. Now, models to decode 4-ch and 16-ch videos are available to fulfill customers' needs. Pacidal ccHDtv DVRs are compatible with all series of Pacidal ccHDtv cameras. Within the ccHDtv surveillance solution, video/audio signals can be transmitted over existing coaxial cables in a current CCTV system, providing you with a seamless way to upgrade analog CCTV devices to full HD quality.