DVR’s or Digital Video Recorders are analogue based units and NVR’s or Network Video Recorders for IP based camera’s are the heart of any CCTV system as without it there is nor recording to look at to see what happened. which ones best? depends on your requirements with which we are willing to assist with in designing the most suitable for your application. there are many pro’s and cons and this link explains it well.
In a nutshell,
- Higher security & lower cost – Analogue
- Analytical or multi branch on WAN – IP
Most modern units can link to Apple/Android apps for remote viewing