Industrial 4-Channel USB to UART Converter

WaveshareSKU: WAV-21619
Sale price £16.20
incl. VAT
excl. VAT
Only 7 units left

Awesome Extras

WaveshareIndustrial USB to TTL Converter (FT232RL)
Sale price £8.60 incl. VAT excl. VAT

This is a 4-channel industrial USB to UART converter, offering 4 channels of concurrent and independent serial communication over USB in a robust metal enclosure.

The converter can be used with popular systems such as Windows 7/8/8.1/10/11, Mac, Linux and Android, requiring a single USB connection for all 4 channels. The unit is housed in an industrial alloy enclosure and uses a robust USB-B ('printer style') connection, making it ideal for industrial environments or repeated connections.

The unit includes ESD protection, an onboard resettable fuse, a protection diode and an IO protection circuit, providing over-current and over-voltage protection.

Wall or surface mounting is possible via the enclosure flanges. A USB-B cable and four custom squid wires are included in the package.


  • Extends a USB connection to 4-channel TTL UART
  • Industrial chip, allows concurrent and independent communication for each channel with flow control
  • Onboard resettable fuse and protection diodes, ensures stable outputs and provides over-current/over-voltage protection
  • Onboard IO protection circuit for surge suppression and ESD protection
  • Onboard TTL serial port 3.3V and 5V voltage level switch, allows selecting TTL level
  • Small size, easy installation
  • Flexible installation, suitable for sorts of devices to extend TTL interfaces
  • Reversed mounting holes
  • Easy to wall or surface mount
  • Industrial alloy enclosure with oxidation dull-polish surface
  • Quality USB-B connection and IDC connector with fool-proof design


Host Port USB
Device Port UART
Baudrate 1200bps ~ 460800bps
USB Port Connector: USB-B
Protection: resettable fuse, ESD protection
UART Port Connector: 6-pin fool-proof header
Protection: IO protection diode

Package Contents

  • 1x USB to 4 Channel UART converter
  • 1x USB-B cable
  • 4x 6-pin squid wires (~20cm)


LED Indicator Table

PWR Power indicator, lights up while the USB is connected and voltage is detected
RXD Receiving indicator, lights up while the device port is receiving data
TXD Sending indicator, lights up while the USB port is sending data
ACT Status indicator, lights up while the converter is properly operating


VCC 5V or 3.3V output, configured by switch
GND Ground
TXD Connecting to MCU.RXD
RXD Connecting to MCU.TXD
RTS Connecting to MCU.CTS
CTS Connecting to MCU.RTS

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