Waveshare Industrial Isolated Multi-Bus Converter, USB / RS232 / RS485 / TTL Communication


In stock

SKU: 1219070
  1. Operating voltage: 5V
  2. Connector: USB-B
  3. Temperature: -25℃ ~ 85℃
  4. Humidity: 5%RH ~ 95%RH
  5. PRODUCT TYPE: Industrial Isolated Multi-bus USB/RS232/RS485/TTL Converter
  6. DATA RATE: 300 ~ 921600bps 300 ~ 600000bps (RS232 to RS232)
  7. OS SUPPORT: Windows 11 / 10 / 8.1 / 8 / 7 / XP


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Category: USB Interface Module

The Multibus Converter is an industrial grade isolated converter that supports USB / RS232 / TTL to RS232 / 485 / TTL, with built-in power supply isolation, digital isolation, and protection circuits like TVS diode. It is easy to use and suitable for industrial control equipments and/or applications with high communication requirement.

NOTE: only one pair of devices will be matched for a complete communication between the Group A and Group B terminals at the same time


Waveshare Multibus Converter Details 7

Useful link:

USB/RS232/RS485/TTL Converter


  1. Adopts original FT232RL for USB communication, fast communicating, stable and reliable, better compatibility
  2. Onboard over-voltage, over-current protection circuits (there’s no protection between the two power supplies of the host terminal)
  3. Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal
  4. Onboard unibody digital isolation, for isolating the signal, reliable and jamproof, low power consumption
  5. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
  6. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
  7. Onboard TTL serial port 3.3V and 5V voltage level switch, allows the user to select TTL level of the Group B terminal
  8. Aluminum alloy enclosure with oxidation dull-polish surface, solid and durable

Packages Includes:

1 x Waveshare Industrial Isolated Multi-Bus Converter, USB / RS232 / RS485 / TTL Communication

SKU: 1219070 Category:
Data rate

300 ~ 921600bps 300 ~ 600000bps (RS232 to RS232)

OS Support

Windows 11 / 10 / 8.1 / 8 / 7 / XP

USB Operating Voltage (V)


USB Connector


USB Protection

200mA resettable fuse, isolated output

RS232 Connector

DB9 male

RS232 Protection

TVS protection, surge-suppress, ESD protection

RS 232 Transmission mode


TTL (UART) Operating Voltage (V)


TTL (UART) Connector

Screw Terminal

TTL (UART) Pinout


TTL (UART) Protection

clamping protection diode, over-voltage protection, reverse-proof, shock-resistance, jamproof

RS485 Connector

Screw Terminal

RS485 Pinout

A+, B-, GND

RS485 Direction Control

hardware auto control

RS485 Protection

lightning proof, surge-suppress, ESD protection

RS485 Transmission

point-to-points (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)

Operating Tempreture

25℃ ~ 85℃

Shipping Weight 0.28 kg
Shipping Dimensions 16 × 10 × 5 cm
3 Months Warranty

This item is covered with a standard supplier warranty of 3 months from the time of delivery against manufacturing defects only. This is a quality product & only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Datasheet of RS232

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Country Of Origin: China