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  • Automatic internal RS-485 bus supervision.
  • No external flow control signals for RS-485 required.
  • Transient suppression on RS-485 data lines.
  • DCE / DTE selectable.
  • Point-to-Point; Multidrop; and Simplex operating modes.
  • Four wire full duplex; two wire half duplex.
  • LEDs for easy status monitoring.
  • Minimum 2000V isolation protection.
  • Compact size• Cable distance of up to 1200m (4000 ft.).
  • Supports baud rates up to 115.2kbps.
  • OS Support: Windows 2000, Windows XP
Connectors 1 DB-25 Female (RS-232)
RS-485 / RS-422 Four Terminal Block
Grounding Tab
Switches SW1 DCE, DTE
SW2 Segment 1~3: Baud Rate;
Segment 4: Reserved;
Segment 5~6: Data Format (bits);
Segment 7~8: RS-422 / RS-485 Operating Mode
Power Consumption DC9V, 0.9W (max.)
Signal Range 1200 m [4000'] (max.)
Data Rate Up to 100 Kbps Under 1200 m [4000']
Environment Operating Temperature 0 ~50˚C
Storage Temperature -20 ~ 60˚C
Humidity 0~80% RH, NC
Physical Properties Housing Plastic
Weight 60 g
Dimension ( L x W x H ) 5.40 x 7.45 x 1.85 cm
                                                           * The pictures and specifications all from Aten company website.