Model 4521 AB network switch allows a device connected to COMMON port access to the A or B port.
Control manually via pushbutton.
Control remotely via DB9 Contact Control Remote port.
The DB9 Remote port provides control by dry contact open/closure logic.
Front panel LED displays switch position and power status.
All 15 signal lines of each HD15 port connector are switched and are transparent to all data.
Electro Standards Laboratories
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Datasheet
Description
Model 4521 AB network switch allows a device connected to COMMON port access to the A or B port.
Control manually via pushbutton.
Control remotely via DB9 Contact Control Remote port.
The DB9 Remote port provides control by dry contact open/closure logic.
Front panel LED displays switch position and power status.
All 15 signal lines of each HD15 port connector are switched and are transparent to all data.
Model 4521 AB network switch allows a device connected to COMMON port access to the A or B port.
Control manually via pushbutton.
Control remotely via DB9 Contact Control Remote port.
The DB9 Remote port provides control by dry contact open/closure logic.
Front panel LED displays switch position and power status.
All 15 signal lines of each HD15 port connector are switched and are transparent to all data.
Model 4521 AB network switch allows a device connected to
COMMON port access to the A or B port.
Control manually via pushbutton.
Control remotely via DB9 Contact Control Remote port.
The DB9 Remote port provides control by dry contact open/closure logic.
Front panel LED displays switch position and power status.
All 15 signal lines of each HD15 port connector are switched and are
transparent to all data.
