This bi-directional converter from Aten provides a hardware solution to the problem of converting signals between two serial standards. This converter can handle any RS-485/RS-422 device allowing it to function as either a short haul modem or interface converter.
Features
RATS signal data transmission control
Point to Point, Multidrop.
Full / half duplex
DCE/DTE Switch
Additional
Specifications
DC 9V 150mA (max) power.
Max cable length 4000'.
Up to 100Kbps data transfer rate.
Plastic case.
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When I use this bi-directional converter it is good and nice it provides a hardware solution to the problem of converting signals between two serial standards. The quality is good and economical also good.