Industrial Covert Unlimited is in its 20th year of operation. CU1.COM has been up since mid 1999. Great security & CCTV products and people who 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'.