FT232RNL USB TO RS232/485/422/TTL Interface Converter

WaveshareSKU: WAV-23996
Sale price £24.20
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excl. VAT
Only 5 units left

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This industrial-grade isolated USB Converter has an onboard original FT232RNL Chip, which provides fast communication, stability, high reliability, and has multi-system support including Mac, Linux, Android and Windows 11 / 10 / 8.1 / 8 / 7. The converter also has multiple conversion support, including USB to RS232, USB to RS485, USB to RS422, USB to TTL

Featuring a safer isolated design with onboard unibody power supply isolation, a stable isolated voltage, and no extra power supply needed for the isolated terminal. With a USB-B port for the power supply, an RS232 Port, and an aluminium alloy enclosure with wall-mount support for easier installation. This device is a great choice when looking for a safe, reliable and easy-to-use converter.


  • Original FT232RNL chip, fast communicating, stable and reliable, better compatibility
  • Multiple communication interface conversion: USB to RS232, USB to RS485, USB to RS422, USB to TTL
  • Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
  • Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
  • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning proof & ESD
  • protection
  • Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
  • Fully automatic transceiver circuit with no delay, ensures the USB port communicates with different interfaces fastly and stably, without interfering with each other
  • Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
  • 3 LEDs for indicating the power and transceiver status
  • High-quality USB-B and RS232 connectors, smoothly plug/pull
  • Industrial grade metal case, supports wall-mount and rail-mount installations, solid and beautiful, easy to install

What's on Board



Industrial grade digital isolated converter

USB Operating voltage 5V
Connector USB-B
Protection 200mA self-recovery fuse, isolated output
RS232 Connector DB9 male
Protection TVS diode, surge protection & ESD protection
Transmission mode Point-to-point
Baud rate 300bps ~ 3Mbps
RS485/422 Connector Screw terminal
Direction control Hardware automatic control
Protection 600W lightningproof and surge-suppress, 15KV ESD protection (reserved two 120R balancing resistors, enabled/disabled via jumper)
Transmission mode Point-to-multipoints (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more; 422 mode: up to 256 nodes, it is recommended to use repeaters for 16 nodes or more)
Baud rate 300bps ~ 3Mbps
TTL (UART) Operating voltage 3.3V / 5V
Connector Screw terminal
Pins TXD, RXD, GND, 5V/3.3V
Protection clamp protection diode, over-voltage/negative-voltage proof, shock resistance
Transmission mode Point-to-point
Baud rate 300 bps ~ 3Mbps
INDICATORS PWR Red power indicator, light up when there is USB connection and voltage is detected
TXD TX indicator, light up when the USB port sends data
RXD RX indicator, light up when the device ports send data back
OPERATING ENVIRONMENT Temperature -15℃ ~ 70℃
Humidity 5%RH ~ 95%RH
OPERATING SYSTEM Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7



Package Contents

  • 1x USB TO RS232/485/422/TTL 
  • 1x Rail-mount buckle 
  • 1x USB type A to type B cable ~1.2m 
  • 1x Screwdriver 

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