Features
A port-powered or externally powered two-channel RS-232 to RS-422/RS-485 converter
It converts TD and RD RS-232 lines to balanced RS-422 or RS-485 signals
RS-485 is an enhanced version of the RS-422 standard
Allowing multiple drivers and receivers on a two-wire system
The unit is powered from the RS-232 data and handshake lines whether the lines are high or low
It can be powered by an external +12VDC 100mA supply
The 4WSD9R has DB-9 female connectors on both the RS-232 side and the RS-485 side
Data Rates: Up to 115.2 kbps
Dimensions: 3.0 x 1.6 x 0.8 in (7.8 x 4.3 x 2.0 cm)
Externally powered transmits up to 4000 ft (1200 m) at 115.2 kbps (may be less with port powering)
In The Box
Model 4WSD9R - Universal Converter