I don't have a manual because I haven't purchased the system, but when I inquired about longer retention ... the reps taold me about recording motion only, which would increase my retention from 90 days to possibly 120 days. If I could get something 180 days, I might be able to get my CEO to consider digital. Thanks for the information about motion only though.
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I don't know all the answers.... but I know where to get them!