USB to 2-Channel RS485 Industrial Grade Isolated Converter

WaveshareSKU: WAV-27646
Sale price £17
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This USB to 2-Channel RS485 converter is made for strong communication with its original FT2232HL chip, providing fast, stable, and reliable data transfer. It supports dual independent RS485 channels, each capable of concurrent communication.

The converter features built-in power supply isolation, eliminating the need for an extra power source for the isolated terminal, and digital isolation for low power consumption. Additionally, it includes a Transient Voltage Suppressor (TVS) to protect against surge and transient spike voltages, making it lightning-proof and anti-electrostatic.


  • Adopts original FT2232HL chip, fast communication, stable and reliable, better compatibility
  • Extending USB to 2CH RS485, allows concurrent and independent communication for each channel
  • Unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
  • Unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
  • TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
  • Onboard self-recovery fuse and protection diodes, gives the current/voltage stable outputs, provides over-current/over-voltage proof, improves shockproof performance
  • Built-in 120R terminal resistor on the RS485 ports, configurable via jumper for flexible switching
  • 3 LEDs for indicating the power and transceiver status
  • Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective


Host Port USB
Device Port RS485
USB Operating voltage 5V
Connector USB-B
Protection 200mA self-recovery fuse, isolated output
Transmission distance About 5m
Isolated RS485 Connector Screw terminal
Direction control Hardware automatic control
Protection 600W lightning-proof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor)
Transmission distance About 1.2km(low rate)
Transmission mode Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
Baud rate 300bps ~ 3Mbps
LED Indicators PWR Red power indicator lights up when there is a USB connection and voltage is detected
TXD Green TX indicator, lights up when the USB port sends data
RXD Blue RX indicator, lights up when the device ports send data back
Operating Environment Temperature -15℃ ~ 70℃
Humidity 5%RH ~ 95%RH
Operating System macOS, Linux, Android, Windows 11/10/8.1/8/7
Appearance Enclosure Rail-mount ABS case, suitable for 35mm DIN rail
Dimensions 81.9 x 54.0 x 32.0mm



RS485 Port Description
A1 PORT1 RS485 Differential signal A+
B1 PORT1 RS485 Differential signal B-
PE Signal Ground
A2 PORT2 RS485 Differential signal A+
B2 PORT2 RS485 Differential signal B-
PE Signal Ground

Package Contents

  • 1x USB TO 2-channel RS485 Converter
  • 1x USB-A Male to USB-B Male Cable -1.2m
  • 1x Screwdriver

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