Industrial FT232RL USB RS485 Converter with ESD TVS 1200m Protection

The industrial USB → RS485 converter is a professional solution designed to ensure reliable, fast and secure serial communications in industrial, automation and remote control applications.

Based on the original FT232RL and SP485EEN chips, it offers high compatibility with modern operating systems and stable performance even in environments subject to electrical noise.

Thanks to the integrated protection circuits, the device is suitable for professional applications where reliability and communication security are essential.

Advanced Industrial Protection

The converter integrates several protection systems:

• TVS (Transient Voltage Suppressor) against surges and lightning
• ESD protection up to 15KV
• Self-resetting fuse
• Overcurrent and overvoltage protection

These features increase the lifespan and reliability of the device even in critical industrial environments.

Stable and reliable RS485 communication

The module supports transmission speeds from:

• 300 bps up to 921600 bps

and allows communications:

• up to approximately 1200 meters on RS485 line
• Point-to-multipoint configuration up to 32 nodes

RS485 direction control is fully automatic via hardware, eliminating the need for manual TX/RX management.

Integrated LED indicators

There are 3 status LEDs:

• PWR (red) → power supply
• TXD (green) → data transmission
• RXD (blue) → data reception

for immediate diagnostics of operation.

Main features

• Industrial USB → RS485 Converter
• Original FT232RL and SP485EEN chips
• Stable and high-speed communication
• TVS, ESD and overcurrent protections
• Transmission distance up to 1200 m
• RS485 multi-node support
• Automatic data direction control
• Integrated status LEDs

Technical specifications

USB

• Operating voltage: 5V
• Connector: USB-A
• Protection:
  • 200 mA self-resetting fuse
  • ESD protection
• USB transmission distance: about 5m

RS485

• Connector: screw terminal
• Pin: A+, B-, GND
• Direction control: automatic hardware
• Protection:
  • TVS 600W
  • 15KV ESD protection
• Transmission distance: about 1200 m
• Mode: Point-to-multipoint up to 32 nodes

Generals

• Transmission speed: 300–921600 bps
• Operating temperature: -15°C ÷ +70°C
• Humidity: 5 %RH ÷ 95 %RH

Operating system compatibility

• Windows XP / 7 / 8 / 8.1 / 10
• Linux
• MacOS
• Android
• WinCE

Package contents

• USB → RS485 Converter
• Mini screwdriver
• USB A Male → USB A Female Cable

Typical applications

• Industrial automation
• PLC and SCADA systems
• Modbus RTU
• Industrial home automation
• RS485 inverters and sensors
• Access control and telemetry

Documentation and useful links

Wiki: www.waveshare.com/wiki/USB_TO_RS485