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Compact grey box with DB9 port and terminal block screws

UOTEK

UOTEK UT-2020 RS232 to RS485 Data Converter DB9 Terminal Block

SKU CH-NY30-707A9

Converts RS-232 signals to RS-485 for industrial automation, supporting 300-115.2K bps over 1,200m with 600W surge protection

  • TypeConverter
  • Connector ADB9
  • Connector BTerminal block
  • Converts RS-232 to RS-485 for industrial automation systems
  • Extends signal reach up to 1,200 metres over twisted pair
  • Operates reliably from -25 to 70 °C in harsh environments
  • Handles 300 to 115.2 Kbps asynchronous half-duplex data rates
  • Compact 62 × 34 × 17.2 mm design fits tight enclosures

Industrial RS-232 to RS-485 Converter

The UOTEK UT-2020 converts asynchronous half-duplex RS-232C signals to differential RS-485 transmission for industrial automation. It suits engineers integrating legacy serial equipment into multi-drop networks across access control, parking, tolling and attendance systems. The converter operates reliably between -25 °C and 70 °C at up to 95 % relative humidity.

DB9 and Terminal Block Connectivity

A DB9 female port handles the RS-232 side while a DB9 pin header plus screw terminal block provides the RS-485 connection for twisted-pair or shielded wiring. The compact 62 mm by 34 mm by 17.2 mm enclosure fits inside tight cabinets. Each RS-485 line includes 600 W lightning surge protection to harden field installations.

Extends Serial Links to 1 200 Metres

The device replaces a direct RS-232 cable limited to 5 m with a differential link reaching 1 200 m at rates from 300 bps to 115.2 K bps. The upgrade is worth it when sensors, controllers or payment terminals must communicate beyond the short native range without adding protocol converters or Ethernet infrastructure.

Highlights

  • Converts RS-232 to RS-485 for industrial automation systems
  • Extends signal reach up to 1,200 metres over twisted pair
  • Operates reliably from -25 to 70 °C in harsh environments
  • Handles 300 to 115.2 Kbps asynchronous half-duplex data rates
  • Compact 62 × 34 × 17.2 mm design fits tight enclosures

Specifications

BrandUOTEK
ModelUT-2020
TypeConverter
Connector ADB9
Connector BTerminal block

Questions about this item

What data rate does the RS-485 interface cap at in practice?

The RS-485 port supports asynchronous half-duplex transmission from 300 bps up to 115.2 Kbps over twisted pair or shielded wire.

What physical space and mounting does the converter need?

The unit measures 62 mm by 34 mm by 17.2 mm and uses a DB9 female connector on the RS-232 side plus a terminal block on the RS-485 side for wiring.

How is the UT-2020 installed and what step is often missed?

Connect the DB9 female to the RS-232 device, wire the terminal block for RS-485 twisted pair, and ensure the line is terminated at the far end to avoid signal reflection.

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