| http://www.w3.org/ns/prov#value | - I know that I can buy a turnkey ready-to-install system, which will consist of some cameras, a digital video recorder, and some sort of box that enables several cameras to merge their input to feed into a single input of the DVR. So, two questions: (a) what is the nature of the box that merges the cameras, and are they available as a standalone unit? (b) Can a DVR be put together from scratch?
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