Industrial Covert Unlimited is in its 25rd year of operation. CU1.COM has been up and running since mid 1997 and was one of the original security equipment buying sites on the internet. Great security & CCTV products and people who still answer the phone!
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HD-TVI DVRs are one of the 3 HD analog formats that are available to provide an HD security solution over standard coaxial cable installs. The advantage of HD-TVI surveillance over the other 2 formats (CVI and TVI) is its ability to transmit 1080P HD up to 1600'.