The <strong>TD-1581-C</strong> and TD-1580-C pair together to form a powerful balanced serial data transport solution. The DB-25 connectors are pinned out to directly support an EIA-530 serial link. However due to the transparency and flexibility of the design, the TD-1580/81 can be used as 6x4 independent 6 Mbps RS-422 channels and 2x1 independent 256 Kbps RS-232 channels.</p><p>This incredible versatility can solve a myriad of serial data communications problems. Your once limited serial links can not only be consolidated but extended to over 12 miles (20 Km) on a single fiber pair. SCADA (supervisory control and data acquisition), Telecommunications, Facility Automation and Control, even DMX Lighting control applications can all benefit from the TD-1580/81. For more advanced systems, a 'Regeneration' switch on the TD-1581 allows users to toggle between synchronous applications that require Send Timing (ST) and asynchronous or synchronous applications that require Terminal Timing (TT).</p><p><b><i>NOTE:</b> Item picture is just for reference. The <b>TD-1580-C</b> and <b>TD-1581-C</b> are sold separately</i></p>