Upgrade of DS1990 allows multiple Serial Number iButtons to reside on a common bus
Unique 48bit serial number
Low-cost electronic key for access control
8-bit CRC for checking data integrity
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Should been used together with desk-top computer, single card can realized 4 channels D1 decode, one PC can support up to 32 channels, easy to construct TV-Wall. Video input source is from GNV200XX series encoder's real time code stream or replay code stream of management center video storage server. ...
