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Honeywell Video HVB422C4 4-Channel Data Port Expander

Honeywell Video HVB422C4 4-Channel Data Port Expander
HONEYWELL VIDEO
HVB422C4
 
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HONEYWELL VIDEO
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The HVB422C4 RS422 Data Port Expander expands a single VideoBloX RS422 channel into four RS422 channels. The RS422 device recieves data from a master device, such as an HVBCPU, on its RS422 slave communication port. The data is transmitted to all 4 master ports of the unit. Data which is returned from the field devices connected to the master ports, such as keyboards, is combined and sent out the RS422 slave communication port to the master device.