4 Channel Network Video Recorder: Up to 4 channel 720p(or 2 channel 1080p) realtime live view, H.264/MJPEG dual codec decoding, ONVIF Version 2.2 conformance, 3D intelligent positioning with PTZ camera, Support 1 SATA HDD up to 4TB, 2 USB2.0,  Support Plug&Play, Multiple network monitoring: Web viewer, CMS, Black or White case (optional)

8 Channel Network Video Recorder: Up to 8 channel 720p(or 2 channel 1080p) realtime live view,   ONVIF Version 2.2 conformance, 3D intelligent positioning with PTZ camera, Support 1 SATA HDD up to 4TB, 2 USB2.0,  Support Plug&Play, Multiple network monitoring: Web viewer, CMS(DSS/PSS) & DMSS, Black or White case (optional)

16 Channel Network Video Recorder: Up to 1080p realtime live view, H.264/MJPEG dual codec decoding, ONVIF Version 2.2 conformance, compatible with ONVIF 2.0, 3D intelligent positioning with PTZ camera, Support 2 SATA HDD up to 8TB, 2 USB2.0, Support Plug&Play, Multiple network monitoring: Web viewer, CMS

4 Channel Network Video Recorder: Up to 4 channel 720p(or 2 channel 1080p) realtime live view, H.264/MJPEG dual codec decoding, ONVIF Version 2.2 conformance, 3D intelligent positioning with PTZ camera, Support 1 SATA HDD up to 4TB, 2 USB2.0,  Support Plug&Play, Multiple network monitoring: Web viewer, CMS, Black or White case (optional)

8 Channel Network Video Recorder: Up to 8 channel 720p(or 2 channel 1080p) realtime live view,   ONVIF Version 2.2 conformance, 3D intelligent positioning with PTZ camera, Support 1 SATA HDD up to 4TB, 2 USB2.0,  Support Plug&Play, Multiple network monitoring: Web viewer, CMS(DSS/PSS) & DMSS, Black or White case (optional)

16 Channel Network Video Recorder: Up to 1080p realtime live view, H.264/MJPEG dual codec decoding, ONVIF Version 2.2 conformance, compatible with ONVIF 2.0, 3D intelligent positioning with PTZ camera, Support 2 SATA HDD up to 8TB, 2 USB2.0, Support Plug&Play, Multiple network monitoring: Web viewer, CMS