Industrial Isolated USB to 4-Channel RS232 Converter

WaveshareSKU: WAV-27022
Sale price £31.30
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This USB To 4-Channel RS232 Converter is an industrial-grade USB to RS232 female port isolated converter, with the FT4232HL chip. It includes protection circuits such as built-in power isolation, ADI magnetic isolation, and a TVS diode. Housed in an aluminium alloy case, it provides easy operation, zero-delay automatic transmission and reception conversion. It is fast, stable, reliable, and has safe communication, making it suitable for industrial control applications with various communication requirements.

This converter supports USB to 4-channel isolated RS232, which is great for expanding multiple RS232 industrial serial devices. The integrated unibody power supply isolation provides stable isolated voltage, while the unibody digital isolation facilitates signal isolation, providing high reliability and strong anti-interference capabilities with low power consumption. The onboard TVS (Transient Voltage Suppressor) effectively suppresses surge voltage and transient spike voltage, providing protection against lightning and electrostatic discharge (ESD).

Male and Female Ports Available

  • This item is available with male or female RS232 ports - Please select an option before adding it to your cart


  • Original FT4232HL chip, fast communicating, stable and reliable, better compatibility
  • Supports USB to 4-channel isolated RS232, convenient for expanding multiple RS232 industrial serial devices
  • Unibody power supply isolation, provides stable isolated voltage
  • 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 & ESD protection
  • Self-recovery fuse and protection diodes, provides the current/voltage stable outputs, provide over-current/over-voltage proof, improve shockproof performance
  • Power supply screw terminal allows 5V~36V DC wide-range input
  • 9 LEDs for indicating the power and transceiver status
  • Aluminium alloy case with sandblasting and anodic oxidation, solid and durable


Host Port USB
Device Port RS232
Baud Rate 300bps ~ 921600bps
USB Operating voltage 5V
Connector USB-B
Protection 200mA self-recovery fuse, isolated output
Transmission distance about 5m
Power Supply Interface Power supply 5~36V DC screw terminal
Protection Anti-reverse
Isolated RS232 Connector DB9 Female
Protection TVS diode, surge protection & ESD protection,
power isolation and signal isolation
Transmission mode Point-to-point
Transmission distance about 15m
Indicators PWR Red power indicator,
lights up when there is a USB connection and voltage is detected
TXD1~4 Green TX indicator, blinking when the RS232 port is sending data
RXD1~4 Blue RX indicator, blinking when the RS232 port is receiving data
Operating Environment Temperature range -40℃ - 85℃
Humidity range 5%RH~95%RH
Operating System MacOS, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7



Package Contents

  • 1x USB To 4-Channel RS232 Female Port Converter,
  • 1x USB type-A to type-B cable -1.2m
  • 1x Power adapter

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