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Industrial Quality RS232 to RS422/485 Converts RS232 to/from RS422/485

Industrial Quality RS232 to RS422/485 Converts RS232 to/from RS422/485

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Manufacturer: USBGEAR
Barcode: 729440692025
Part Number: SER-485-PRO
Warranty: ONE YEAR
In Stock: Yes
Ship Weight: 1 lbs.
COLOR Silver
Size: 67×90×27mm

Item Works with Windows ME

Our Price: $79.98
Quantity Discount(s)
6 or more: $76.56
12 or more: $68.34
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User Reviews by
Product Rating: Product User Rating provided by ReviewGear

Pros: Easy installation, Works with Vista and Windows 7.

db-9-serial-male.gif  CONNECTOR TYPE

Product Description

 Converts RS232 <=> RS422/485  

RS485 bit-rate adaptive ART (Automatic Receive Transmit control)

  • Quick configuration for standard modes
  • RS422 with Hardware handshake
  • Full Software Configuration, NO Jumpers
  • Flexible power 9-30V DC
  • LED indicator for Power and signals
  • Internal Termination and BIAS by software
  • DIN-Rail mountable

Product Overview:

The SER-485-PRO is an adapter to convert bidirectional signals from RS232 to RS422 and RS485 in industrial environments. In RS485 mode the data direction is managed by the bit-rate adaptive function of ART (Automatic Receive Transmit control). ART analyzes the data in real-time, and adapts to the setup of the RS232 port.

The SER-485-PRO is an optical isolated variant of the SER-485 PRO. Further the device is Surge Protected up to 4kV. All options and parameters of SER-485-PRO operation are configured by software, controlled via an easy-to-use menu structure. This menu is accessed via standard terminal programs. The SER-485-PRO is a NO Jumper type of device.

With SER-485-PRO often used operation modes are selected by simple DIP switches. The full versatility is controlled by the built-in software configuration menu. The behavior of RS422 and various options of RS485 are selected by an easy-to-use menu structure. The internal termination and BIAS (polarization) resistors allow to prepare the RS485 signals for connection to customers networks. These internal resistors are activated by relays, controlled by the configuration menu. There is no need to open the case for configuration.


  • RS232: DTE/DCE selected by DIP
  • RS485: Automatic Receive Transmit control(ART)
  • Baudrate adaption in real time
  • Line Adjust: Built-in Termination and Polarization (BIAS) resistors
  • Operation Modes: RS422 with hardware handshake 
  • RS485 by ART, RTS or DTR
  • RS485 Half- and Full-Duplex
  • Two basic modes selected by DIP switch
  • Cable Length: max. 1200 m
  • Speed: max. 1Mbps
  • max. 250kbps with ART
  • Connector: RS232 1x DB9 female
  • RS485/RS422 1 x DB9 male plus Terminal Block (5 c-clamps)

Software Configuration:

  • Configuration Menu: Various parameters of signal conversion are defined via an easy to-use menu interface, access is via standard terminal programs (Hyper-terminal,mini terminal

Operation Modes: RS422

  • RS485 by RTS 
  • RS485 by DTR 
  • RS485 by ART (Automatic Receive Transmit control)
  • ART options RS485: Transmit/Receive change as quick, average, standard
  • Wiring: RS422 (4-wire)
  • RS485 Full Duplex (4-wire)
  • RS485 Half Duplex (2-wire) with Echo
  • RS485 Half Duplex (2-wire) no Echo
  • Termination: RS422/485 line termination 120© isolated by relay, controlled via software configuration
  • RS485 BIAS: BIAS (polarization) optical isolated by special drivers, controlled via software configuration

Power and Environment:

  • Power requirements: 9-30V DC, 1.3W
  • Power supply Adapter: 12V DC, 500mA
  • Dimensions: 67×90×27 mm³ (W×L×H)
  • Operating Temp: 0°C - 60°C
  • Storage Temp: -20°C - 85°C
  • Case: SECC sheet metal (1mm)
  • Weight: 160g

Package Contents:

  • Converter SER-485-PRO
  • Power Supply
  • English Documentation 
Important Technical Information:
Converts RS232 <=> RS422/485 12" USB Serial RS-232 Cable for NoteBook/Laptop Users Great FTDI CHip USB to RS-232 Adaptor for GPS/PDA/POS/Modem/Etc.

Industrial Quality RS232 to RS422/485 Converts RS232 to/from RS422/485

Industrial Quality RS232 to RS422/485 Converts RS232 to/from RS422/485 - Image A
Industrial Quality RS232 to RS422/485 Converts RS232 to/from RS422/485 - Image B