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Small black USB to RS485 converter dongle with three status LEDs

SMUGDESK

SMUGDESK USB to RS485 Converter FT232RL SP485EEN

SKU CH-ZXSV-F7NN1

Industrial USB to RS485 bidirectional converter with FT232RL and SP485EEN chips, TVS surge protection, resettable fuse, 1.2 km range and 300-921600 bps speed

  • Stable industrial communication via original FT232RL and SP485EEN chips
  • Surge and electrostatic protection from onboard TVS suppressor
  • Over-current and over-voltage safeguard with resettable fuse and diodes
  • Reliable data rates from 300 to 921600 bps over 1.2 km RS485 distance
  • Broad OS support including Linux, Android, WinCE and Windows 10/11

Industrial USB to RS485 Converter

This industrial-grade USB to RS485 converter uses the original FT232RL and SP485EEN chips for stable bidirectional communication. It is designed for industrial control equipment and applications that demand reliable serial links. Onboard TVS diodes, a resettable fuse and protection diodes guard against surges, electrostatic discharge and over-current events. Three status LEDs show power and transceiver activity.

Check USB port and RS485 wiring before ordering

Verify that your host provides a standard USB-A connection and that the target device uses RS485 differential signalling with a common ground reference. The converter supports baud rates from 300 to 921600 bps, so confirm your software can match the required speed. Ensure the RS485 cable run does not exceed 1.2 km and that the USB cable stays within 5 m. Driver installation may be needed on older operating systems.

Suits engineers integrating legacy serial gear

This adapter suits engineers and technicians who need to connect RS485 sensors, PLCs or HMIs to modern PCs running Windows 11 down to XP, Linux, Android or WinCE. It is not for users who require USB-C native connectivity, isolated RS485 ports, or multi-drop networks needing more than 10 nodes without additional repeaters. Buyers needing galvanic isolation should look at a different solution.

Highlights

  • Stable industrial communication via original FT232RL and SP485EEN chips
  • Surge and electrostatic protection from onboard TVS suppressor
  • Over-current and over-voltage safeguard with resettable fuse and diodes
  • Reliable data rates from 300 to 921600 bps over 1.2 km RS485 distance
  • Broad OS support including Linux, Android, WinCE and Windows 10/11

Specifications

No published specifications for this item yet.

Questions about this item

What comes in the box with this SMUGDESK USB to RS485 converter, and do I need any extra cables?

The converter includes the FT232RL and SP485EEN chips with onboard TVS, resettable fuse and three status LEDs. A USB cable up to 5 metres is required separately for the host connection.

Which chip version should I choose for reliable industrial communication?

This model uses the original FT232RL and SP485EEN chips, rated for 300 to 921600 bps with 1.2 km RS485 reach, making it suited for industrial control equipment.

What does the 921600 bps figure mean when the adapter is installed in a real machine?

It is the maximum stable baud rate the FT232RL and SP485EEN combination can sustain over RS485, assuming correct wiring and termination within the 1.2 km distance limit.

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