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4ch DVR or 4 Channel Digital Video Recorder Systems are a common solution for small CCTV Video Surveillance systems. DVRs and Digital Video Recorders are also known as Stand-alone DVRs due to their purpose built design and mostly Linux Embedded operating systems. Thus stand-alone 4 channel DVR systems are considered the ultimate in reliable video security. The industry selection of 4ch DVR units is mostly equipped with the latest in H.264 compression for optimized video streaming and storage. Units are available in many levels including Real-time D1 or 4CIF High Resolution recording.
Though 4ch DVR system are typically compact in size, today countless professional features are have common place such CMS software support, remote client software and/or Web Browser interface including Mobile Viewing on devices like iPhone and Android. Even the most affordable DVRs now also offer superior local features like Monitoring on HD monitors with HDMI High Definition outputs. All sorts of professional features including Two Way Audio, DVD Writer, USB device support and RS-485 PTZ Security Camera Control are commonly included. A2Z Security Cameras offers a full selection of the leading brand DVRs and Digital Video Recorders whether it be a standard unit or an advanced solution with on-board Video Analytics.